Rape bee pollen with four different particle sizes were digested in vitro. The contents of dissolved polyphenols at different digestion stages, and contents of residual polyphenols after digestion were analyzed. The constituents of residual polyphenols and their acid production characteristics using intestinal flora were determined by high performance liquid chromatography. The results showed that during in vitro digestion, the contents of dissolved polyphenols increased with decreasing particle size. Moreover, smashing was beneficial for improving the retention rates of dissolved polyphenols. Furthermore, the contents of residual polyphenols after digestion increased with decreasing particle size. Additionally, smashing had impacts on the constituents of residual polyphenols. Besides, the pH of fermentation broth decreased with smaller particle size, and contents of acetic acid, propionic acid, and butyric acid increased. The acid production characteristics of bee pollen were better with decreasing particle size. The results showed that the in vitro digestion characteristics of polyphenols of wall-broken bee pollen were better than those without wall-broken. These findings can provide a theoretical basis for developing and applying deep processed bee pollen products.
ZHENG Hui
,
ZHENG Tao
,
WANG Ruijie
,
TANG Jinyao
,
SHAO Xinxin
,
LI Shunxiang
. Effects of particle size of rape bee pollen on polyphenols contents and acids production during in vitro digestion[J]. Food and Fermentation Industries, 2019
, 45(7)
: 59
-64
.
DOI: 10.13995/j.cnki.11-1802/ts.019413
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