| abstract |
The invention discloses a method for extracting apple polyphenols from apple juice production process, which is characterized by the following steps: (1) picking apples: picking ripe apples and washing them; (2) crushing and pressing: selecting qualified apples to enter The mill is crushed and squeezed; (3) water, low-carbon alcohol, ethyl acetate and propionic acid solution are added to the pomace obtained in the above-mentioned steps (2), and heated to 40-60° C. using microwaves, and the standing time is 30- 60min; (4) centrifugation; (5) vacuum concentration; (6) drying. Compared with the prior art, the present invention improves the yield of apple polyphenols by picking apples, crushing and pressing, centrifuging, vacuum concentrating and drying, and adopting microwave heating in the process steps. |