期刊
BIOLOGICAL & PHARMACEUTICAL BULLETIN
卷 44, 期 8, 页码 1156-1159出版社
PHARMACEUTICAL SOC JAPAN
DOI: 10.1248/bpb.b21-00239
关键词
honeybee larvae; glycogen; immunomodulatory activity
Honeybee larvae are recognized as nutrient-rich food, and the high molecular weight glycogen extracted from them has immunomodulatory activity, leading to increased production of TNF-α and IL-6 in cells, indicating its potential application as a functional food ingredient.
Honeybee larvae have been recognized as nutrient-rich food in many countries. Although glycogen, a storage form of glucose in animals, is synthesized in honeybee larvae, there is no information on the structure of glycan and its biological activity. In this study, we successfully extracted glycogen from honeybee larvae using hot water extraction and investigated the structure and biological activity of glycan. It was found that the molecular weight of glycogen from honeybee larvae is higher than that of glycogen from bovine liver and oysters. In addition, treatment of RAW264.7 cells with glycogen from honeybee larvae resulted in a much higher production of tumor necrosis factor (TNF)-alpha and interleukin (IL)-6 than treatment with glycogen from either bovine liver or oysters. These results suggest that the high molecular weight glycogen from honeybee larvae is a functional food ingredient with immunomodulatory activity.
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