Applications of Tannins in Industry

Singh, Akhlash P.; Kumar, Sunil

doi:10.5772/intechopen.85984

Cited by 24 publications

(19 citation statements)

References 57 publications

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Section: Condensed Tannins' Chemical Structurementioning

confidence: 99%

“…Tannins are a heterogeneous group of phenolic compounds that can be classified into 3 major groups based on their chemical structures: hydrolysable tannins (HTs), condensed tannins (CTs) and phlorotannins (PTs) [20,35]. The HTs and CTs are found in terrestrial plants, while PTs only appears in brown seaweeds [20,35]. Hydrolysable tannins contain a central unit of glucose or other polyols esterified with gallic acid, named gallotannins, or with heaxahydroxydiphenic acid, named ellagitannins [25].…”

Section: Condensed Tannins' Chemical Structurementioning

confidence: 99%

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Condensed Tannins as Antioxidants in Ruminants—Effectiveness and Action Mechanisms to Improve Animal Antioxidant Status and Oxidative Stability of Products

Soldado

Bessa

Jerónimo

2021

Animals

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Condensed tannins (CTs) are widely distributed in plants, and due to their recognized antioxidant activity are considered as possible natural antioxidants for application in ruminant diets. A wide range of CT-rich sources has been tested in ruminant diets, and their effects on animal antioxidant status and oxidative stability of their products are reviewed in the present work. Possible mechanisms underlying the CT antioxidant effects in ruminants are also discussed, and the CT chemical structure is briefly presented. Utilization of CT-rich sources in ruminant feeding can improve the animals’ antioxidant status and oxidative stability of their products. However, the results are still inconsistent. Although poorly understood, the evidence suggests that CTs can induce an antioxidant effect in living animals and in their products through direct and indirect mechanisms, which can occur by an integrated and synergic way involving: (i) absorption of CTs with low molecular weight or metabolites, despite CTs’ poor bioavailability; (ii) antioxidant action on the gastrointestinal tract; and (iii) interaction with other antioxidant agents. Condensed tannins are alternative dietary antioxidants for ruminants, but further studies should be carried out to elucidate the mechanism underlying the antioxidant activity of each CT source to design effective antioxidant strategies based on the use of CTs in ruminant diets.

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Section: Condensed Tannins' Chemical Structurementioning

confidence: 99%

Section: Condensed Tannins' Chemical Structurementioning

confidence: 99%

Condensed Tannins as Antioxidants in Ruminants—Effectiveness and Action Mechanisms to Improve Animal Antioxidant Status and Oxidative Stability of Products

Soldado

Bessa

Jerónimo

2021

Animals

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“…In addition, tannins act as immunomodulatory agents in the battle against infectious diseases, being effective against the methicillin-resistant Staphylococcus aureus, and also have antiviral activity against HIV (human immunodeficiency virus) and HSV-2 (herpes simplex virus 2) [193].…”

Section: Vegetal Extracts In Starch Food Packagingmentioning

confidence: 99%

Green Design of Novel Starch-Based Packaging Materials Sustaining Human and Environmental Health

et al. 2021

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A critical overview of current approaches to the development of starch-containing packaging, integrating the principles of green chemistry (GC), green technology (GT) and green nanotechnology (GN) with those of green packaging (GP) to produce materials important for both us and the planet is given. First, as a relationship between GP and GC, the benefits of natural bioactive compounds are analyzed and the state-of-the-art is updated in terms of the starch packaging incorporating green chemicals that normally help us to maintain health, are environmentally friendly and are obtained via GC. Newer approaches are identified, such as the incorporation of vitamins or minerals into films and coatings. Second, the relationship between GP and GT is assessed by analyzing the influence on starch films of green physical treatments such as UV, electron beam or gamma irradiation, and plasma; emerging research areas are proposed, such as the use of cold atmospheric plasma for the production of films. Thirdly, the approaches on how GN can be used successfully to improve the mechanical properties and bioactivity of packaging are summarized; current trends are identified, such as a green synthesis of bionanocomposites containing phytosynthesized metal nanoparticles. Last but not least, bioinspiration ideas for the design of the future green packaging containing starch are presented.

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“…3, 4 & 5) were present in both extracts which shows promising capabilities of both extracts for prevention and treatment of many degenerative diseases. Tannins are water soluble compounds which is an important raw material for sustainable green industries such as leather, feed, fisheries, beverages, etc [17]. (Fig.…”

Section: Phytochemical Analysismentioning

confidence: 99%

Phytochemical analysis and antimicrobial activity of adhatoda vasica leaves

Shahzad¹

2020

PAB

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The experiment was conducted to estimate the phytochemical and antibacterial activity in Adhatoda vasica during the year 2018. The plant samples were collected from the Khanpur valley in fresh forms and were processed in the Food Science and Technology Laboratory The University of Haripur for further chemical analysis. Antimicrobial activity of Adhatodavasica was tested against various gram positive and gram negative bacterial strains. Different phytochemicals compounds i.e. Alkaloids, Steriods, Flavonoids, Terpenoids, Tannins Extract, Saponins, and Glycosides were investigated in the experiment. Highest antimicrobial activity was recorded in case of gram positive bacteria. Leaf extracts of Adhatodavasica leaves extract would be replacement to synthetic/aritificial antimicrobial agents and needs further studies and clinical trials. The phytochemical screening indicated presence of secondary metabolites such as alkaloid, flavonoids, tannins and phenol in both extracts making it to have antibacterial potentials. Extract showed remarkable activity against the growth of the selected bacteria The presence of these phytochemicals may lead to the conclusion that Adhatodavasica plants can be used as medicine for treating different diseases.

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Applications of Tannins in Industry

Cited by 24 publications

References 57 publications

Condensed Tannins as Antioxidants in Ruminants—Effectiveness and Action Mechanisms to Improve Animal Antioxidant Status and Oxidative Stability of Products

Condensed Tannins as Antioxidants in Ruminants—Effectiveness and Action Mechanisms to Improve Animal Antioxidant Status and Oxidative Stability of Products

Green Design of Novel Starch-Based Packaging Materials Sustaining Human and Environmental Health

Phytochemical analysis and antimicrobial activity of adhatoda vasica leaves

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