Antioxidant activity, polyphenolic composition and in vitro antibacterial and antifungal activities of tea seed oil

IF 1 4区农林科学 Q4 CHEMISTRY, APPLIED Grasas y Aceites Pub Date : 2022-03-31 DOI:10.3989/gya.1229202

H. K. Ruto, J. Yugi, S. O. Ochanda, C. Bii

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Abstract

The polyphenolic composition and antioxidant activity of tea seed oil from C. sinensis TRFK 301/5 (green colored) and TRFK 306 (purple colored) and C. oleifera were evaluated. The total polyphenolic content, total catechins and catechin fractions were significantly different in the oils. C. oleifera contained significantly (p ≤ 0.05) higher amounts of catechins and polyphenols than C. sinensis. C. oleifera also exhibited a higher DPPH radical scavenging activity (18.81 ± 0.46%) compared to C. sinensis (TRFK 306; 15.98 ± 0.13 and TRFK 301/5; 14.73 ± 0.47%). The antimicrobial activities of tea seed oil and two selected oils (olive and eucalyptus oil), were also evaluated against Escherichia coli, Staphylococcus aureus, Candinda albicans, Cryptococcus neoformans and Trichophyton mentagrophytes. S. aureus was significantly inhibited by the oils compared to E. coli. The oils inhibited the growth of T. mentagrophytes and C. albicans, although they had no effect on C. neoformans. Tea seed oil is a potential source of beneficial phytochemicals and potent antimicrobial agents.

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茶籽油的抗氧化活性、多酚组成及体外抗菌、抗真菌活性

研究了茶籽油的多酚组成及抗氧化活性。中华鳖TRFK 301/5（绿色）和TRFK 306（紫色）和C。对油进行了评价。油中的总多酚含量、总儿茶素和儿茶素组分差异显著。C。油籽中儿茶素和多酚含量显著高于油籽（p≤0.05）。中华鳖。C。油桐对DPPH自由基的清除活性也高于油桐（18.81±0.46%）。茶籽油和两种油（橄榄油和桉树油）对大肠杆菌、金黄色葡萄球菌、白色念珠菌、新型隐球菌和毛癣菌的抗菌活性也进行了评价。S。与E。大肠杆菌。这些油抑制了T。须生植物和C。白色念珠菌，尽管它们对C。新生代。茶籽油是有益植物化学物质和强效抗菌剂的潜在来源。

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来源期刊

Grasas y Aceites 工程技术-食品科技

CiteScore

2.50

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Grasas y Aceites is a peer-reviewed journal devoted to the publication of original articles concerning the broad field of lipids, especially edible fats and oils from different origins, including non acyl lipids from microbial origin relevant to the food industry. It publishes full research articles, research notes, reviews as well as information on references, patents, and books. Grasas y Aceites publishes original articles on basic or practical research, as well as review articles on lipid related topics in food science and technology, biology, (bio)chemistry, medical science, nutrition, (bio)technology, processing and engineering. Topics at the interface of basic research and applications are encouraged. Manuscripts related to by-products from the oil industry and the handling and treatment of the wastewaters are also welcomed. Topics of special interest to Grasas y Aceites are: -Lipid analysis, including sensory analysis -Oleochemistry, including lipase modified lipids -Biochemistry and molecular biology of lipids, including genetically modified oil crops and micro-organisms -Lipids in health and disease, including functional foods and clinical studies -Technical aspects of oil extraction and refining -Processing and storage of oleaginous fruit, especially olive pickling -Agricultural practices in oil crops, when affecting oil yield or quality