Global excellence in food chemistry

 Front. Nutr., 2022

The current global changes in economic, social, and technological production systems of food necessitate developing innovative solutions and strategies that ensure maximum utilization of food resources to produce desirable and wholesome food products. Food chemistry and related research activities are arguably the core of research activities that ensure the achievement of the above goals. This Research Topic is aimed at capturing prominent food chemistry research activities to provide recent insights and current research activities to meet the above goals. This Research Topic provides a balanced collection of original research, reviews, and new methods contributions, authored by experts in the field. The studies reported in the present Research Topic can be generally categorized into the following themes: food safety research that was concerned with the detection and quantification of pesticides and antimicrobial agents; studies on bioactive compounds, their stability and biofunctionalities; fractionation of pea protein, and others.

Comparison of Chromatic and Spectrophotometric Properties of White and Red Wines Produced in Galicia (Northwest Spain) by Applying PCA

Molecules 2022, 27(20), 7000

Wine is a complex matrix composed of numerous substances and color has an important influence on its quality and consumer acceptance. Color is affected by numerous factors such as pre-fermentation and fermentation operations, ageing, contact or addition of certain substances. In this study, different chromatic parameters were determined in 99 wines (58 red and 41 white) made from Galician (Northwest Spain) grape varieties. These parameters were obtained by using simple, rapid, and inexpensive spectrophotometric methodologies: color intensity, hue, total polyphenols content (Total Polyphenol Index TPI, Folin–Ciocalteu index, FCI), total anthocyans, total tannins, and color coordinates measured by the CIELab system. The influence of ageing in barrels (red wines) or using chips (white and red wines) on these parameters was also studied. A principal component analysis (PCA) was carried out to characterize the wines according to their chromatic characteristics. Application of PCA to the experimental data resulted in satisfactory classifications of studied white and red wines according to the cited enological practices.

Advances in Fungal Phenaloenones—Natural Metabolites with Great Promise: Biosynthesis, Bioactivities, and an In Silico Evaluation of Their Potential as Human Glucose Transporter 1 Inhibitors

Molecules 2022, 27(20), 6797

Phenaloenones are structurally unique aromatic polyketides that have been reported in both microbial and plant sources. They possess a hydroxy perinaphthenone three-fused-ring system and exhibit diverse bioactivities, such as cytotoxic, antimicrobial, antioxidant, and anti-HIV properties, and tyrosinase, α-glucosidase, lipase, AchE (acetylcholinesterase), indoleamine 2,3-dioxygenase 1, angiotensin-I-converting enzyme, and tyrosine phosphatase inhibition. Moreover, they have a rich nucleophilic nucleus that has inspired many chemists and biologists to synthesize more of these related derivatives. The current review provides an overview of the reported phenalenones with a fungal origin, including their structures, sources, biosynthesis, and bioactivities. Moreover, more than 135 metabolites have been listed, and 71 references have been cited. SuperPred, an artificial intelligence (AI) webserver, was used to predict the potential targets for selected phenalenones. Among these targets, we chose human glucose transporter 1 (hGLUT1) for an extensive in silico study, as it shows high probability and model accuracy. Among them, aspergillussanones C (60) and G (60) possessed the highest negative docking scores of −15.082 and −14.829 kcal/mol, respectively, compared to the native inhibitor of 5RE (score: −11.206 kcal/mol). The MD (molecular dynamics) simulation revealed their stability in complexes with GLUT1 at 100 ns. The virtual screening study results open up a new therapeutic approach by using some phenalenones as hGLUT1 inhibitors, which might be a potential target for cancer therapy.

Royal Jelly: Beneficial Properties and Synergistic Effects with Chemotherapeutic Drugs with Particular Emphasis in Anticancer Strategies

 Nutrients 2022, 14(19), 4166

Cancer is one of the major causes of death globally. Currently, various methods are used to treat cancer, including radiotherapy, surgery, and chemotherapy, all of which have serious adverse effects. A healthy lifestyle, especially a nutritional diet, plays a critical role in the treatment and prevention of many disorders, including cancer. The above notion, plus the trend in going back to nature, encourages consumers and the food industry to invest more in food products and to find potential candidates that can maintain human health. One of these agents, and a very notable food agent, is royal jelly (RJ), known to be produced by the hypopharyngeal and mandibular salivary glands of young nurse honeybees. RJ contains bioactive substances, such as carbohydrates, protein, lipids, peptides, mineral salts and polyphenols which contribute to the appreciated biological and pharmacological activities. Antioxidant, anticancer, anti-inflammatory, antidiabetic, and antibacterial impacts are among the well-recognized benefits. The combination of RJ or its constituents with anticancer drugs has synergistic effects on cancer disorders, enhancing the drug’s effectiveness or reducing its side effects. The purpose of the present review is to emphasize the possible interactions between chemotherapy and RJ, or its components, in treating cancer illnesses.

The Chemical, Microbiological and Volatile Composition of Kefir-like Beverages Produced from Red Table Grape Juice in Repeated 24-h Fed-Batch Subcultures

 Foods 2022, 11(19), 3117

The aim of this work was to study the production of kefir-like beverages via the fed-batch fermentation of red table grape juice at initial pHs of 3.99 (fermentation A) and 5.99 (fermentation B) with kefir grains during 4 repeated 24-h fed-batch subcultures. All kefir-like beverages (KLB) were characterized by low alcoholic grade (≤3.6%, v/v) and lactic and acetic acid concentrations. The beverages obtained from fermentation B had lower concentrations of sugars and higher microbial counts than the KLB obtained in fermentation A. Additionally, the KLB samples from fermentation B were the most aromatic and had the highest contents of alcohols, esters, aldehydes and organic acids, in contrast with the nonfermented juice and KLB from fermentation A. These results indicate the possibility of obtaining red table grape KLB with their own distinctive aromatic characteristics and high content in probiotic viable cells, contributing to the valorization of this fruit.

Phytochemical Profiling, Mineral Elements, and Biological Activities of Artemisia campestris L. Grown in Algeria

 Horticulturae 2022, 8(10), 914

Artemisia campestris L. is commonly used in folk medicine due to its antioxidant, antidiabetic, nutritional, and culinary properties. Our study assessed the total phenolics contents, antioxidant, and pharmacological activities of various organic extracts prepared from the aerial parts of Artemisia campestris, and its mineral elements and chemical profile were analyzed. ICP-OES was used to analyze the mineral profile and the LC-MS/MS analysis was used to characterize the phytochemical profiling. A series of antioxidant tests were carried out using DPPH, ABTS, beta-carotene, GOR, RP, CUPRAC, and O-Phenanthroline assays. In vitro potent inhibitory actions of A. campestris extracts were investigated to evaluate their anti-cholinesterase, anti-lipase and anti-diabetic activities. The photoprotective effect of the plant was measured by the sun protection factor. The most powerful inhibitor of α-amylase was AcPEE (IC50 = 11.79 ± 0.14 μg/mL), which also showed a significant butyrylcholinesterase inhibitory effect (IC50 = 93.50 ± 1.60 μg/mL). At IC50 = 23.16 ± 0.19 μg/mL, AcEAE showed the most powerful inhibitory effects on acetylcholinesterase. A. campestris was found to have a strong photoprotective ability, absorbing UV radiations with SPF values ranging from 26.07 ± 0.22 to 40.76 ± 0.11. The results showed that A. campestris extract has strong antioxidant activity in all the test samples except for the carotene bleaching assay. The LC/MS-MS results showed that AcDE, AcEAE, and AcBE identified 11 compounds belonging to Polyphenols Compounds. Our result also showed that A. campestris contains a high concentration of essential minerals, including macro-and micro-elements with their values close to the FAO’s recommended concentration. A. campestris has the capacity to improve pharmaceutical formulations, health, and medical research, due to its compositions and potent biological properties.

Identification of novel natural drug candidates against BRAF mutated carcinoma; An integrative in-silico structure-based pharmacophore modeling and virtual screening process

 Front. Chem., 2022

The BRAF gene is responsible for transferring signals from outside of the cell to inside of the nucleus by converting a protein namely B-Raf through the RAS/MAPK pathway. This pathway contribute to cell division, proliferation, migration, and apoptotic cell death of human and animal. Mutation in this gene may cause the development of several cancers, including lung, skin, colon, and neuroblastoma. Currently, a few available drugs are being used that has developed by targeting the BRAF mutated protein, and due to the toxic side effects, patients suffer a lot during their treatment. Therefore this study aimed to identify potentially lead compounds that can target and block the expression of BRAF and subsequently inhibit the cancer. The hits were generated through the pharmacophore model-based virtual screening, molecular docking, pharmacohore model validation, ADME (absorption, distribution, metabolism, and excretion) analysis molecular dynamics (MD) simulation to find more suitable candidate against the overexpress BRAF gene. The pharmacophore based screening initially identified 14 k possible hits from online database which were further screened by ligand scout advance software to get hit compound. Based on molecular docking score of ZINC70454679 (-10.6 kcal/mol), ZINC253500968 (-9.4 kcal/mol), ZINC106887736 (-8.6 kcal/mol), and ZINC107434492 (-8.1 kcal/mol), pharmacophore feature and toxicity evaluation, we selected four possible lead compounds. The dynamic simulation with Schrodinger Maestro software was used to determine the stability of the potential lead candidates with target protein (PDB ID: 5VAM). The results showed that the newly obtained four compounds were more stable than the control ligand (Pub Chem ID: 90408826). The current results showed that the ZINC70454679, ZINC253500968, ZINC106887736, and ZINC107434492 compounds may be able to work against several cancers through targeting the BRAF overexpressed gene. To develop a novel drug candidate, however the evaluation of the web lab based experimental work are necessary to evaluate the efficiency of the each compound against the BRAF target gene.

From Tradition to Health: Chemical and Bioactive Characterization of Five Traditional Plants

Molecules 2022, 27(19), 6495

Several scientific studies have been proving the bioactive effects of many aromatic and medicinal plants associated with the presence of a high number of bioactive compounds, namely phenolic compounds. The antioxidant, anti-inflammatory, and antimicrobial capacities of these molecules have aroused high interest in some industrial sectors, including food, pharmaceuticals, and cosmetics. This work aimed to determine the phenolic profiles of the infusions and hydroethanolic extracts of five plants (Carpobrotus edulis, Genista tridentata, Verbascum sinuatum, Cytisus multiflorus, and Calluna vulgaris) that have been employed in many traditional preparations. In addition, the antioxidant, antimicrobial, anti-inflammatory, and anti-tumoral activity of each different preparation was evaluated using in vitro assays. The HPLC-DAD-ESI/MS profile revealed the presence of eighty phenolic compounds, belonging to seven different families of compounds. Regarding antioxidant properties, the hydroethanolic extract of C. edulis showed a potent effect in the TBARS assay (IC50 = 1.20 µg/mL), while G. tridentata hydroethanolic extract achieved better results in the OxHLIA test (IC50 = 76 µg/mL). For cytotoxic and anti-inflammatory results, V. sinuatum infusions stood out significantly, with GI50 = 59.1–92.1 µg/mL and IC50 = 121.1 µg/mL, respectively. Finally, C. edulis hydroethanolic extract displayed the most relevant antibacterial activity, showing MBC values of 0.25–1 mg/mL, while G. tridentata hydroethanolic extract exerted the greatest antifungal effects (MFC of 0.5–1 mg/mL). The results of this study deepen the knowledge of the phenolic profiles and also provide evidence on the bioactive properties of the species selected, which could be considered highly valuable options for research and application in several sectors, namely food, cosmetics, and pharmaceuticals.

Crosstalk between xanthine oxidase (XO) inhibiting and cancer chemotherapeutic properties of comestible flavonoids- a comprehensive update

 The Journal of Nutritional Biochemistry, 110, 109147, 2022

Gout is an inflammatory disease caused by metabolic disorder or genetic inheritance. People throughout the world are strongly dependent on ethnomedicine for the treatment of gout and some receive satisfactory curative treatment. The natural remedies as well as established drugs derived from natural sources or synthetically made exert their action by mechanisms that are closely associated with anticancer treatment mechanisms regarding inhibition of xanthine oxidase, feedback inhibition of de novo purine synthesis, depolymerization and disappearance of microtubule, inhibition of NF-ĸB activation, induction of TRAIL, promotion of apoptosis, and caspase activation and proteasome inhibition. Some anti-gout and anticancer novel compounds interact with same receptors for their action, e.g., colchicine and colchicine analogues. Dietary flavonoids, i.e., chrysin, kaempferol, quercetin, fisetin, pelargonidin, apigenin, luteolin, myricetin, isorhamnetin, phloretinetc etc. have comparable IC50 values with established anti-gout drug and effective against both cancer and gout. Moreover, a noticeable number of newer anticancer compounds have already been isolated from plants that have been using by local traditional healers and herbal practitioners to treat gout. Therefore, the anti-gout plants might have greater potentiality to become selective candidates for screening of newer anticancer leads.

Biological Functions and Utilization of Different Part of the Papaya: A Review

 Food Rev. Int. 2022

Papaya is one of the most important fruit trees cultivated throughout the tropical and subtropical regions and its production is rising worldwide. Its edible part has a high nutritional and sensory value and a great commercial potential. Mature papaya is consumed fresh and has been used in food processing and cosmetic industries. Along with some other parts such as leaves, seeds or skin, papaya has been used in traditional medicine in various countries. In fact, numerous studies have reported the presence of bioactive compounds with diverse biological properties in the papaya by-products, which has motivated the expansion of their applications. Papaya by-products have been demonstrated to exert a wide range of activities (e.g.; antioxidant, anti-cancer, anti-dengue, anti-malarial, anti-fertility, diabetes prevention, insecticidal, anti-AIDS) that could be useful in pharmaceutical industry. They could be used in food industry, as a source of functional compounds and in innovative active packaging strategies, and in different cosmetic products, among other applications. Although this scenario indicates that the papaya industry could diversify and increase its economic value, there are two problems that significantly affect it: the spread of pathogens and the highly perishable nature of this fruit. On the one hand, genetic tools have been used to obtain transgenic varieties resistant to pathogens, while new preservation technologies have been explored. This review focuses on the main bioactive compounds, important physiological functions and applications of different papaya parts and also in the current development of genetically modified papaya in the industry and the research progress on storage and preservation.

Polyphenols as possible alternative agents in chronic fatigue: a review

Phytochemistry Reviews, 2022

Chronic fatigue syndrome (CFS) is a pathological state of extreme tiredness that lasts more than six months and may possess an impact on the social, emotional, or occupational functioning of an individual. CFS is characterized by profound disabling fatigue associated with infectious, rheumatological, and neurological symptoms. The current pharmacological treatment for CFS does not offer a complete cure for the disease, and none of the available treatments show promising results. The exact mechanism of the pathogenesis of the disease is still unknown, with current suggestions indicating the overlapping roles of the immune system, central nervous system, and neuroendocrine system. However, the pathological mechanism revolves around inflammatory and oxidative stress markers. Polyphenols are the most abundant secondary metabolites of plant origin, with potent antioxidant and anti-inflammatory effects, and can exert protective activity against a whole range of disorders. The current review is aimed at highlighting the emerging role of polyphenols in CFS from both preclinical and clinical studies. Numerous agents of this class have shown promising results in different in vitro and in vivo models of chronic fatigue/CFS, predominantly by counteracting oxidative stress and the inflammatory cascade. The clinical data in this regard is still very limited and needs expanding through randomized, placebo-controlled studies to draw final conclusions on whether polyphenols may be a class of clinically effective nutraceuticals in patients with CFS.

Enrichment of gamma-aminobutyric acid in foods: From conventional methods to innovative technologies

 Food Res. Int. 162, Part A, 111801, 2022

Gamma-aminobutyric acid (GABA), a non-protein amino acid, possesses various health benefits and plays a signaling and defensive role in plants. Due to the low content of GABA in plant foods, scientists have made great efforts to enrich GABA in foods using various chemical, physical, and biological methods, including anaerobic treatment, cold, salt treatment, germination, microbial fermentation, crossbreeding, and innovative technologies such as ultrasound, ultraviolet, high pressure, etc. To effectively increase GABA in different foods, it is crucial to understand the underlying mechanisms and the virtues and limitations of different enrichment methods that are suitable for different foods. In this paper, we aimed to comprehensively review the recent progress on both conventional and innovative enrichment methods, the advantages and disadvantages, the associated mechanisms, and the applicable foods of these methods. We also summarized the functions of GABA in plants and microorganisms, the factors influencing GABA enrichment, the patents related to GABA enrichment, and the functional foods rich in GABA. The mechanisms of GABA enrichment mainly include modification of cell microstructure; influencing H+ and Ca2+ concentration and enzyme configuration, thereby activating glutamate decarboxylase; and regulation of gene and protein expression of enzymes involved in GABA biosynthesis and metabolism. This review will provide significant information on the production of GABA-enriched foods.

Himalayan Wild Fruits as a Strong Source of Nutraceuticals, Therapeutics, Food and Nutrition Security

 Food Rev. Int. 2022

The Himalayan region supports a wide diversity of flora and fauna; hence it is home to many natural resources. Despite this, the people living here are struggling for essential needs such as food and nutrition. However, in Himalayan region, wild plants and their fruits contribute significantly to the livelihood of local people and communities. Several studies recommended that Himalayan wild fruits possess significant biologically active compounds, antioxidants, vitamins and minerals. In addition, the presence of secondary metabolites in these plants gives them a prominent place in traditional medicinal systems. However, detailed investigation of health-promoting effects, chemical composition, and nutraceutical profiling is lacking in the variety of Himalayan wild fruits. Therefore, this review article will explore the information about wild edible fruits, such as health-promoting effects, chemical composition, and nutraceutical profiling in the Himalayan region. In this context, a detailed search was done through different search engines including Scopus, PubMed, Web of Science, Science Direct and Google Scholar. Specific keywords were used to explore available data about Himalayan wild fruits. Several Himalayan wild fruits like Berberis asiatica, Celtis australis, Ficus palmata, Fragaria indica, Morus alba, Myrica esculenta, Phyllanthus emblica, Prunus armeniaca, etc. showed presence of important bioactive compounds responsible for different therapeutic activities such as anti-inflammatory, anti-diabetic, anticancer, cardioprotective, neuroprotective, antimicrobial, etc. These fruits also possess high nutraceutical value. Hence this study presents detailed information about wild edible fruits which will be helpful in future for researchers, food industries, pharmaceutical industries, and several other government and non-government organisations in developing strategies to ensure food security by using these important wild fruits.

Single-Cell Proteins Obtained by Circular Economy Intended as a Feed Ingredient in Aquaculture

 Foods 2022, 11(18), 2831

The constant increment in the world’s population leads to a parallel increase in the demand for food. This situation gives place the need for urgent development of alternative and sustainable resources to satisfy this nutritional requirement. Human nutrition is currently based on fisheries, which accounts for 50% of the fish production for human consumption, but also on agriculture, livestock, and aquaculture. Among them, aquaculture has been pointed out as a promising source of animal protein that can provide the population with high-quality protein food. This productive model has also gained attention due to its fast development. However, several aquaculture species require considerable amounts of fish protein to reach optimal growth rates, which represents its main drawback. Aquaculture needs to become sustainable using renewable source of nutrients with high contents of proteins to ensure properly fed animals. To achieve this goal, different approaches have been considered. In this sense, single-cell protein (SCP) products are a promising solution to replace fish protein from fishmeal. SCP flours based on microbes or algae biomass can be sustainably obtained. These microorganisms can be cultured by using residues supplied by other industries such as agriculture, food, or urban areas. Hence, the application of SCP for developing innovative fish meal offers a double solution by reducing the management of residues and by providing a sustainable source of proteins to aquaculture. However, the use of SCP as aquaculture feed also has some limitations, such as problems of digestibility, presence of toxins, or difficulty to scale-up the production process. In this work, we review the potential sources of SCP, their respective production processes, and their implementation in circular economy strategies, through the revalorization and exploitation of different residues for aquaculture feeding purposes. The data analyzed show the positive effects of SCP inclusion in diets and point to SCP meals as a sustainable feed system. However, new processes need to be exploited to improve yield. In that direction, the circular economy is a potential alternative to produce SCP at any time of the year and from various cost-free substrates, almost without a negative impact.

Pirfenidone and post-Covid-19 pulmonary fibrosis: invoked again for realistic goals

 Inflammopharmacology, 30, 2017–2026 (2022)

Pirfenidone (PFN) is an anti-fibrotic drug with significant anti-inflammatory property used for treatment of fibrotic conditions such as idiopathic pulmonary fibrosis (IPF). In the coronavirus disease 2019 (Covid-19) era, severe acute respiratory syndrome 2 (SARS-CoV-2) could initially lead to acute lung injury (ALI) and in severe cases may cause acute respiratory distress syndrome (ARDS) which is usually resolved with normal lung function. However, some cases of ALI and ARDS are progressed to the more severe critical stage of pulmonary fibrosis commonly named post-Covid-19 pulmonary fibrosis which needs an urgent address and proper management. Therefore, the objective of the present study was to highlight the potential role of PFN in the management of post-Covid-19 pulmonary fibrosis. The precise mechanism of post-Covid-19 pulmonary fibrosis is related to the activation of transforming growth factor beta (TGF-β1), which activates the release of extracellular proteins, fibroblast proliferation, fibroblast migration and myofibroblast conversion. PFN inhibits accumulation and recruitment of inflammatory cells, fibroblast proliferation, deposition of extracellular matrix in response to TGFβ1 and other pro-inflammatory cytokines. In addition, PFN suppresses furin (TGFβ1 convertase activator) a protein effector involved in the entry of SARS-CoV-2 and activation of TGFβ1, and thus PFN reduces the pathogenesis of SARS-CoV-2. Besides, PFN modulates signaling pathways such as Wingless/Int (Wnt/β-catenin), Yes-Associated Protein (YAP)/Transcription Co-Activator PDZ Binding Motif (TAZ) and Hippo Signaling Pathways that are involved in the pathogenesis of post-Covid-19 pulmonary fibrosis. In conclusion, the anti-inflammatory and anti-fibrotic properties of PFN may attenuate post-Covid-19 pulmonary fibrosis.

Comparative study on the phenolic composition and in vitro bioactivity of medicinal and aromatic plants from the Lamiaceae family

 Food Res. Int. 161, 111875, 2022

Medicinal and aromatic plants (MAP) have been described as a source of phenolic compounds with potential as antioxidant, antiproliferative and antimicrobial agents. MAP from the Lamiaceae family (Origanum vulgare L., Thymus vulgaris L., Ocimum basilicum L., Salvia officinalis L., Melissa officinalis L., and Matricaria chamomilla L.) were selected to perform a phytochemical and biological screening for their further exploitation as natural bioactive ingredients. The total content of phenolic compounds varied from 184.02 mg/g extract in M. officinalis to 17.97 mg/g extract in M. chamomilla. Caffeic and rosmarinic acids were the main phenolic acids found in the respective hydroalcoholic extracts. The extracts showed a promising antioxidant activity in vitro, being related the phenolic compositions of the extracts, furthermore, all extracts being able to combat lipid peroxidation in TBARS assays with an IC50 under 26 μg/mL, moreover all the plant extract has prevented the oxidative haemolysis in OxHLIA assays at concentrations below 67 μg/mL in a Δt 60 min and under 118 μg/mL for a Δt 120 min. Regarding to the bactericidal and fungicidal action the plant extracts were able to inhibit growth against bacteria associated with food hazards, such as Salmonella typhimurium (MIC < 1) and Listeria monocytogenes (MIC < 1), regarding to fungicidal activity it can be highlighted the MIC values under to 0.25 for Aspergillus versicolor and Trichoderma viride. Overall, the selected Lamiaceae plants stood out as a source of active phytochemicals that can be used by different industries, such as food and cosmetics.

The Nutritional and Bioactive Components, Potential Health Function and Comprehensive Utilization of Pomegranate: A Review

 Food Rev. Int. 2022

Pomegranate is native to the region between Iran and northern India, as well as cultivated in China with a large planting area and a variety of high-quality species. Pomegranate not only has delicious fruits and beautiful flowers, but it is rich in bioactive compounds with benefits to human health.The distribution and content of bioactive components in different organs and by-products of pomegranate have distinct characteristics. A variety of phenols, flavonoids, and triterpenoids exist in pomegranate peels and flowers, whereas the active ingredients in the leaves are mainly tannins. Arils and seeds are good sources of anthocyanins and unsaturated fatty acids, respectively. Pomegranate possesses antioxidant, anti-inflammatory, anti-cancer, anti-diabetic, anti-cardiovascular, anti-pathogenic and skin care effects, among others. It is also widely used in food, health care, medicinal, and ornamental purposes. This review summarizes recent research progress on pomegranate, putting forward some innovative applications for the development and utilization of pomegranate resources. This review also provides a theoretical basis for the research and industrialization of pomegranate, as well as a reference for further development of pomegranate germplasm resources.

Hepatoprotective Mechanism of Ginsenoside Rg1 against Alcoholic Liver Damage Based on Gut Microbiota and Network Pharmacology

 Oxidative Medicine and Cellular Longevity, 2022, 5025237

Alcoholic liver disease (ALD) is a major public health problem worldwide, which needs to be effective prevention. Ginsenoside Rg1 (GRg1), a bioactive ingredient extracted from ginseng, has benefit effects on health. In this study, 11 potential targets of GRg1 against ALD were firstly obtained by network pharmacology. KEGG pathway enrichment showed that GRg1-target-ALD was closely related to Toll-like receptor (TLR) and nuclear factor-kappa B (NF-κB) signaling pathways. In addition, GRg1 decreased antioxidant levels and increased oxidative levels in alcohol-treated mice, which alleviated oxidative stress-induced hepatic damage. GRg1 enhanced intestinal barrier function via upregulating the levels of tight junction protein and immunoglobulin A. GRg1 also reduced alcohol-induced inflammation by suppressing TLR4/NF-κB pathway, which was consistent with the prediction of network targets. Moreover, GRg1 altered GM population, and Verrucomicrobia, Bacteroidetes, Akkermansia, Bacteroides, Lachnospiraceae_NK4A136_group, and Alloprevotella played positive association with intestinal barrier indicators and negative correlation with hepatic inflammation biomarkers. The results suggest that GRg1 administration might be a promising strategy for protection of alcohol-induced liver damage.

Metabolomics approach reveals high energy diet improves the quality and enhances the flavor of black Tibetan sheep meat by altering the composition of rumen microbiota

 Front. Nut. 2022

This study aims to determine the impact of dietary energy levels on rumen microbial composition and its relationship to the quality of Black Tibetan sheep meat by applying metabolomics and Pearson's correlation analyses. For this purpose, UHPLC-QTOF-MS was used to identify the metabolome, whereas 16S rDNA sequencing was used to detect the rumen microbiota. Eventually, we observed that the high energy diet group (HS) improved the carcass quality of Black Tibetan sheep and fat deposition in the longissimus lumborum (LL) compared to the medium energy diet group (MS). However, HS considerably increased the texture, water holding capacity (WHC), and volatile flavor of the LL when compared to that of MS and the low energy diet group (LS). Metabolomics and correlation analyses revealed that dietary energy levels mainly affected the metabolism of carbohydrates and lipids of the LL, which consequently influenced the content of volatile flavor compounds (VOCs) and fats. Furthermore, HS increased the abundance of Quinella, Ruminococcus 2, (Eubacterium) coprostanoligenes, and Succinivibrionaceae UCG-001, all of which participate in the carbohydrate metabolism in rumen and thus influence the metabolite levels (stachyose, isomaltose, etc.) in the LL. Overall, a high-energy diet is desirable for the production of Black Tibetan sheep mutton because it improves the mouthfeel and flavor of meat by altering the composition of rumen microbiota, which influences the metabolism in the LL.

Safer plant-based nanoparticles for combating antibiotic resistance in bacteria: A comprehensive review on its potential applications, recent advances, and future perspective

 Science of the Total Environment, 821, 153472. 2022

Background

Antibiotic resistance is one of the current threats to human health, forcing the use of drugs that are more noxious, costlier, and with low efficiency. There are several causes behind antibiotic resistance, including over-prescription of antibiotics in both humans and livestock. In this scenario, researchers are shifting to new alternatives to fight back this concerning situation.

Scope and approach

Nanoparticles have emerged as new tools that can be used to combat deadly bacterial infections directly or indirectly to overcome antibiotic resistance. Although nanoparticles are being used in the pharmaceutical industry, there is a constant concern about their toxicity toward human health because of the involvement of well-known toxic chemicals (i.e., sodium/potassium borohydride) making their use very risky for eukaryotic cells.

Key findings and conclusions

Multiple nanoparticle-based approaches to counter bacterial infections, providing crucial insight into the design of elements that play critical roles in the creation of antimicrobial nanotherapeutic drugs, are currently underway. In this context, plant-based nanoparticles will be less toxic than many other forms, which constitute promising candidates to avoid widespread damage to the microbiome associated with current practices. This article aims to review the actual knowledge on plant-based nanoparticle products for antibiotic resistance and the possible replacement of antibiotics to treat multidrug-resistant bacterial infections.