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16 articles for “catechins”
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Comprehensive account on role of catechin based polyphenols in nanocomposite formulations
Abstract: Antioxidants play a crucial role in wellness, health maintenance and the prevention of chronic and degenerative disease, in neuroprotection activities and protection against oxidative cellular damage by U.V. radiation. Polyphenols are secondary metabolites of plants usually involved in defense against ultraviolet radiation or aggression by pathogens. Antioxidant properties, free radical-scavenging abilities and antimicrobial properties of these polyphenols make them useful in the field of biomedical applications, used as food additives, …
Published in Journal of Polymer & Composites · Vol. 8, Issue 1, 2020 · pp. 26–31 Read article
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Clinical Utility of Black Tea Polyphenols in Chemoprevention and Therapeutics Against Cancer
Abstract: Tea is the second-most preferred beverage produced from Camellia sinesis. It is cultivated in more than 30 countries. Several scientific studies have specified that polyphenolic compounds in tea may reduce the risk of a variety of infirmity including cancer. Most of the research evidences are available from green tea but limited information is available from black tea. Several studies have investigated both in vitro and in vivo models including rats, …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 11, Issue 3, 2021 · pp. 7–14 Read article
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Biochemical, Antimicrobial Characterization of Dooars Tea (Camellia sinensis) Clone during CTC Manufacturing
Abstract: Industrial manufacturing of CTC tea includes different stages. The polyphenol content catechins are oxidized from stage 1–4 (including withering, cutting/tearing, fermentation/oxidation and drying processes). The catechins are polymerized to tannins with the help of enzyme polyphenol oxidase (PPO), both classes of compounds show differential antioxidant (total flavonoid content, UV absorbing compounds content, antioxidant enzyme Phenylalanine ammonia lyase activity is changed), antimicrobial and therapeutic potentials, usually reduced in late (dried) stages. …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 5, Issue 2, 2015 · pp. 5–14 Read article
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Medicinal Importance of Albizia lebbeck: A Review
Abstract: Herbs are extensively hunted these days for their medicinal potential. Isolation and purification of active phytoconstituent as drug is relatively old concept in the pharmaceutical field. Now scientists are more concerned for the wholesome use of herbs. Therefore, herbs are searched with various angles at several parameters. This paper presents a detailed description about one of such medicinally important herb named Shirish in Ayurvedic system of medicine and as Albizia …
Published in Research & Reviews : Journal of Herbal Science · Vol. 4, Issue 3, 2015 · pp. 4–7 Read article
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Studies on Extraction of Flavonoids from the Peel of Pisum Sativum
Abstract: Pisumsativum is commonly known as Pea plant and belongs to Fabaceae family. It is an herbaceous annual plant. Pea pods not only yield an adequate quality of dietary fibre but provide a substantial amount of proteins, sugars, and minerals. Globally, significant quantities of pea residue are generated, an enormous amount of which is used as animal feed. The pea pods consist of an appreciable amount of polyphenols, including phenolic acids …
Published in International Journal of Biochemistry and Biomolecule Research · Vol. 1, Issue 2, 2023 · pp. 17–22 Read article
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A Review on Phytochemical and Pharmacological Properties of Anacyclus Pyrethrum (Akarkara)
Abstract: The wild species Anacyclus pyrethrum, or A. pyrethrum, is a member of the Asteraceae family. It is commonly known as Akarkara. It originated in Spain, Morocco, and Algeria, and has since spread to Sri Lanka, India, Ukraine, Germany, Myanmar, France, and Poland. It is the benefits of bioactive compounds of plant found the chemical makeup, analgesic, anti-inflammatory, and wound-healing effects of hydroalcoholic extracts of A. pyrethrum’s roots, seeds, leaves, and …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 12, Issue 1, 2025 · pp. 102–110 Read article
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Review on Dioscorea alata and its Pharmacological application
Abstract: Dioscorea alata, also known as water yam, is an important crop found worldwide. About 600 different species have been reported worldwide. Many nations, including South America, Africa, Australia, and the southern United States, cultivate D. alata. D. Alata is a member of the Discordance family and has been demonstrated to possess anti-inflammatory, anti-apoptotic, and antioxidant qualities. Dioscorea's metabolites include phenolic chemicals, which reduce sugars, flavonoids, glycosides, saponins, alkaloids, anthraquinones, proteins, …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 12, Issue 2, 2025 · pp. 80–86 Read article
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Plant Bioactive Metabolites and Their Role in the Prevention and Control of Dental Diseases and Infections.
Abstract: The oral diseases, including dental caries and periodontitis, affect masses worldwide, and have historically been managed with synthetic antimicrobials that cause deleterious side effects, leading to mounting bacterial resistance. Consequently, contemporary dentistry is rapidly shifting toward phytomedicine using plant bioactive molecules, such as polyphenols, terpenes, anthraquinones (berberin, eugenol, curcumin, catechins, allicin, and azadirachtin. These compounds offer potent antimicrobial, anti-inflammatory, and tissue-regenerative properties that are crucial for preventing and curing dental …
Published in Emerging Trends in Metabolites · Vol. 3, Issue 1, 2026 · pp. 47–66 Read article
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Extraction and Characterization of Antioxidants from the Seeds of Ethiopian Avocado Variety, Pinkerton
Abstract: The objective of this study was to extract and characterize the antioxidants from the Ethiopian avocado seeds of the Pinkerton variety, using ethanol as a solvent. Response surface methodology (RSM) in combination with Box-Behnken experimental design with a three level, three-factor mixture design was used to optimize the extraction condition for assessing the maximum yield of antioxidant from the avocado seeds. Ethanol concentration (%, v/v), temperature (°C) and time (h) …
Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 3, 2017 · pp. 49–56 Read article
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Leucoanthocyanidin Reductase (LAR) Gene Analysisin Reductase
Abstract: Leucoanthocyanidin reductase (LAR) catalyzes the synthesis of catechin that is first step in PA biosynthesis. LAR involved in production of the flavan-3-ol. LAR gene is involved in proanthocyanidine production in several plants. Proanthocyanidins are plant secondary metabolites and occur in a wide range of plants and play an important role in defense against herbivores. The analysis of 50 proteins by global alignment of EF148325 with other ortholog sequences which have …
Published in Research and Reviews : A Journal of Immunology · Vol. 3, Issue 2, 2013 · pp. 15–27 Read article
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Black Tea: Leveraging Human Health from Indian Perspective
Abstract: Tea, the most preferred drink in the world after water, has been under intense research in recent years due to its fascinating chemical composition. Major polyphenolic compounds— theaflavins (TF), residual catechins, thearubigins as well as theanine and caffeine—present in black tea (BT) contribute to color, distinctive flavor and play significant roles both for quality of tea and act as a safeguard against many ailments. Antioxidants present in BT act against …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 8, Issue 2, 2018 · pp. 53–60 Read article
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Chemical Profiling and Antibacterial Activity of Punica Granatum L against Pathogens Causing Bovine Mastitis
Abstract: The antibacterial activity of aqueous and methanol extracts of Punica granatum L was investigated against bovine mastitis causing bacterial pathogens- Streptococcus agalactiae, Staphylococcus aureus, Streptococcus uberis, Escherichia coli, Streptococcus dysagalactiae and coagulase negative Staphylococcus aureus by agar disc diffusion method [3] isolated locally from clinical cases. The results obtained in the present study scientifically proved and suggest the use of Punica granatum for treating mastitis causing organism. The phytochemical screening …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 4, Issue 1, 2014 · pp. 12–15 Read article
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Physicochemical, Biochemical and Microbiological Characterization of Green and Black Tea during Storage in Different Packaging Materials
Abstract: The storage of tea is an important endeavor for tea industry. The appealing characteristics of this beverage are its aroma, taste, color as well as its antioxidant and antimicrobial qualities. The different manufacturing strategies for black and green tea affect the shelf life of different types of commercially available tea varieties. Different types of packaging alter the quality parameters of different tea clones. The quality parameters are assessed according to …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 6, Issue 3, 2016 · pp. 5–30 Read article
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Determination of Antioxidant Activity of Phenolic Extract of Grapes
Abstract: The grapes were extracted under various conditions using different solvents. The antioxidant activity of solvent extracts was investigated by DPPH radical scavenging method. Ethanol extract exhibited the highest antioxidant activity compared to the other solvents (BuOH, EtOAc, Me2 Cl2 and pet.ether). There was a correlation between antioxidant activity and total phenol content. HPLC analysis of the extracts showed that gallic and cinnamic acid was the major phenolic compounds in grapes. …
Published in Research & Reviews : Journal of Botany · Vol. 7, Issue 2, 2018 · pp. 17–21 Read article
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Flavonoids Regulate Airway MUC5AC Mucin Expression through Modulation of Multiple Signalling Pathways
Abstract: Airway mucus is a component of pulmonary innate immune function and plays very important role in defense against invading pathogenic microbes, chemicals and particles. The protective function of airway mucus is attributed to the viscoelasticity of mucins. Mucins are large glycoproteins play important role in cell–cell adhesion, airways protection, Nuclear-factor kappa B signalling, epidermal growth factor receptor signalling. Eleven mucin genes (among twenty identified mucin genes) have been expressed at …
Published in Research and Reviews: A Journal of Pharmacology · Vol. 7, Issue 3, 2017 · pp. 21–33 Read article
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Antifungal, Antioxidant Activity and Phytochemical Analysis of Extracts from Vitex rivularis (Lamiaceae)
Abstract: The present study was designed to investigate the biological properties of methanolic extracts of leaves and seeds from Vitexrivularis. Leaves and seeds extracts were prepared by maceration in methanol. Phytochemicals analysis was performed by colorimetric method, chemical reaction method and high-performance liquid chromatography (HPLC). The broth microdilution method was used to evaluate the in vitro activity against three strains of Candida albicans and 17 isolates of two yeast species (Candida …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 7, Issue 1, 2020 · pp. 23–48 Read article