期刊
INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES
卷 50, 期 -, 页码 73-83出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ifset.2018.10.008
关键词
Enzymatic browning; Polyphenol oxidase; Anti-browning; Non-thermal technologies; Natural inhibitors; Bioactive compounds
资金
- University of Padova [DOR 526 1739309]
Enzymatic browning is associated to the colour alteration and phenolic degradation of minimally-processed fruits and vegetables. The main responsible is polyphenol oxidase (PPO, EC 1.14.18.1), a copper-containing oxidoreductase which catalyzes two different enzymatic reactions involving oxygen and polyphenolic substrates which are polymerized to dark pigments. Since the control of PPO activity is until now an open question in the agro-food industry, the search for new anti-browning strategies is moving towards replacing conventional treatments. The present review is aimed to discuss non-thermal technologies and natural inhibitors considering their anti-PPO impact in relation to enzyme source, processing conditions, type and concentration of bioactive compounds. These innovative treatments can be proposed as eco-friendly systems for effectively reducing PPO activity thus preventing enzymatic browning and consequently improving sensory, antioxidant and nutritional properties of fruit and vegetable products.
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