First, the soft persimmon off astringent method 1, the biological method off the astringent: the apple, pear, hawthorn and persimmon mixed layer (by 1:10 ratio) stacked in a closed container, will consume a lot of oxygen, promote persimmon anaerobic respiration, Acetaldehyde is produced, and the tannins are polymerized to complete the astringent deaeration. Generally it takes 5-7 days. 2. Astringency of alcohol method: spray 75% alcohol on persimmon fruit, spray volume 0.5% of fruit weight, spray the persimmon fruit into the container and seal it, spray it at 20 to 25 degrees Celsius for 5-7 days at room temperature. Astringent. 3, fumigation method off the astringent: The persimmon fruit into the tank, and leave a small hole in the bottom of the cylinder, after the smoke exhaust oxygen sealed 3-4 days, after removal in a ventilated place, scattered net smoke can be. 4, the piercing method to remove astringent: insert a small section of dried sesame stalk or other similar in the vicinity of Shidi, a few days after the persimmon can be astringent. Second, the hard persimmon off astringent method 1, cold water off the astringent: The persimmon fruit into the tank or bucket, into the cold water submerged persimmon fruit, every 2 days for 1 water, 7 days to astringent. 2, warm water method off astringent: the persimmon fruit into the large cylinder, about 70% of the volume, and then poured into the warm water of 40 to 50 degrees Celsius, cylinder mouth with old quilts or other insulation material tightly, 10-24 hours Astringent. China Agricultural Network Editor
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