Food Business Network Tea extract is a new type of natural non-toxic antioxidant, which has a higher rhythmic antioxidant effect on the finger. Japanese tea biochemistry expert Takeuchi Yoshiichi reported that the antioxidant in tea is 10 to 20 times higher than the antioxidant value of V. 11 The study by Matsuzaki Miko and Others found that the catechins in tea have strong antioxidant activity, and the antioxidant activity of 20 ppm of epicatechin eclipse (ECG) is obviously 20 ppm. V and 50 ppm BHA.
The natural antioxidant l辋j launched by the company is the tea extract as the main ingredient. Domestic research has also begun in this area. Food Science and Technology, 1990, No. 9 published Luo Chenggang's article "Preparation and Application of Natural Antioxidants of Pu'er Tea"} China Food Information, No. 5, 1990, published Li Zhaolong's manuscript "From Antioxidants extracted from tea and their applications in the food industryâ€; Huazhong Agricultural University, South China University of Technology and other universities have begun research in this area. According to reports, the Tea Research Institute of the Chinese Academy of Agricultural Sciences uses tea to develop the natural antioxidants of the leaves. Has been successful, and passed the ministerial appraisal in July 1988.
The mechanism of oxidative deterioration of foods is that unsaturated fatty acids in oils and fats are easily oxidized to form peroxides, and peroxides continue to decompose, producing aldehydes and ketones, which cause foods to produce quasi-smoke gas, that is, rancidity.
Tea antioxidants are a class of polyphenols, collectively referred to as catechins. According to the relevant data from Japan, 1O0 grams of green leaves, 28.9 grams of crude catechins (72% of ground) were extracted. The results of the analysis showed that (1) one-by-one table of catechins was eaten by decyl ester (EGCG). ) u. 7 grams; (a) ~ 襄 食 catechin catechin (EGC) 3.5 grams, (a) one-on-one tea keet 2. O grams due to catechins B ring and c ring on the oxime hydroxyl It has the activity of hydrogen donor and has a strong reducing ability, which can interrupt the chain reaction of auto-oxidation into hydroperoxide, and has the effect of resisting oxidation and rancidity. The antioxidant capacity of catechins and other molar concentrations is: EG CG> EG C> ECG > EC polyphenols and their oxides account for 2O-35%.
Tea - Extracting antioxidants, mainly by dissolving tea polyphenols in water or an organic solvent of ethanol, and taking 60% when measured. C oven method or reactive oxygen AOM method, with the peroxide value as the measurement index, according to the induction period to understand the anti-oxidation technology of the lipophyllum storage tea extract, the banana leaf extract is a new type of natural non-toxic antioxidant, l988 July 4~7F [The 13th meeting of the National Food Addition 1Iii Jing Health Standards Collaboration Conference held by the Ministry of Health in Tianjin recognized the natural antioxidants of tea as one of the food additives in China. Short, high yield, generally up to 25~ 40 } good oxidation resistance, better than the same concentration of BHT, good heat resistance, wide applicability to different oils, good anti-oxidation effect on oils and fried foods It has synergistic effect with various antioxidants and synergists, which provides a broad prospect for the development of high-efficiency composite antioxidants in the future. The cost is low, and various teas can be used as raw materials, and the cost and BHT are roughly brown. Tea is a traditional beverage in China, and it is also an important economic commodity and export planing commodity in China. In recent years, the world's production of è¼II} has grown steadily, and it is a significant issue for the new use of tea.
In short, the future of extracting natural antioxidants from tea leaves is broad, and we look forward to the future, the factory that extracts antioxidants from tea will rise up, and the natural antioxidants extracted from tea are widely used in various foods. China's food additive market will be more prosperous and rich, and China's food NAk will have greater development.
Henan Dayuan Food Additive Co., Ltd. Tel 0371-66080000 QQ 835880000
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