The invention discloses a method for extracting vegetable
tannin extract from dogberry kernels, which is implemented by collecting and cleaning dogberry kernels, removing impurities, draining, squeezing with a pair of rollers for smashing, extracting vegetable
tannin extract liquid by extraction technique and concentrating (wherein feed
liquid ratio is 1:4-5, extraction temperature is no higher than 90 DEG C, concentration of concentrated solution is 18-20 baume degrees, and temperature is 60-70 DEG C), and
spray drying to obtain the dogberry
tannin extract. Due to adopting discarded dogberry kernels as the
raw material in tannin extract production, the invention solves the increasingly grave shortage of tannin extract
raw material, provides a new
raw material for tannin extract production, re-develops and re-utilizes the discarded dogberry kernels, thus avoiding
wasting resources, mitigating environment
pollution, and effectively reducing cost of tannin extract. The extraction technique adopted in the invention can effectively extract
active ingredient of tannin in dogberry kernels and retain the
pale color thereof. the invention has simple technique, high practicability, high product quality, wide application, and high conversion rate, and develops a new tannin extract variety---dogberry tannin, which has good quality and low price.