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Deciphering the interaction mechanism between Litsea pungens Hemsl. Oil (LPHO) characteristic flavor substances and
Yimeng Shan1, Huilin Shen2, Li-Tao Tong3
1Institute of Food Science and Technology/Western Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100193, China; National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya, 572024, China.
Abstract:
The characteristic flavor compounds of Litsea pungens Hemsl. Oil (LPHO) with specific flavors were analyzed by GC/O-MS. Four substances, citral, limonene, linalool, and citronellal, were selected as representative characteristic flavor substances in wood ginger oil, and formed the linalool-starch complex (LIC), citral-starch complex (CIC), limonene-starch complex (LEC), and citronellal -starch complex (CTC) respectively. It was demonstrated that LIC had the highest encapsulation efficiency, flavor retention and complexation index (58.44 % ± 0.93 %, 86.92 % ± 1.38 %, 32.04 % ± 1.24 %). The LIC showed smaller release rates and relatively high storage stability. Structural characterization showed that the LIC and CTC formed a V7-type crystalline structure, and the citral starch complex and limonene starch complex formed a V6-type crystalline structure. This study elucidated the differences in the structural properties of the characteristic flavor substances and starch complexes in LPHO and enriched the knowledge of the interaction mechanism between flavor substances and starch.
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