Effects of superheated steam treatment on the inactivation of microbial counts, enzyme activity and the inhibition of lipid oxidation of rape bee pollen

Yanxiang Bi^{^a^,¹}, Zidan Zhou^{^a^,¹}, Jiabao Ni^{^a^,^b}, Sara Zielińska^{^c}, Zhihao Zhang^{^d}, Chunliang Luo^{^e}, Wenjun Peng^{^a}, Na Ma^{^f}, Wenli Tian^{^a}(), Xiaoming Fang^{^a}()

^a State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100093, China

^bCollege of Engineering, China Agricultural University, P.O. Box 194, 17 Qinghua Donglu, Beijing, 100083, China

^cDepartment of Systems Engineering, University of Warmia and Mazury in Olsztyn, Heweliusza 14, Olsztyn, 10-719, Poland

^d Mudanjiang Branch of Heilongjiang Academy of Agricltural Sciences, Heilongjiang, 157020, China

^e Yunnan Nongken Nujiang Bee Industry Co., Ltd, Peng Wenjun expert workstation, Yunnan, 673100, China

^f Zhonghong Bioengineering Co., Ltd. No. 8 South Chaoyangmen Street, Beijing, 100020, China

¹Contributed equally to this work

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Abstract

The effect of superheated steam (SHS) treatment on the quality characteristics of rape bee pollen were studied, and the efficiency of inactivation and inhibition of lipid oxidation were analyzed to investigate the differences between SHS and ⁶⁰Co radiation treatment. The number of total plate count (TPC) and mold colonies (MC) remained within the limits of the standards after SHS treatment at 140 ℃ for 2 min. Neither TPC nor MC were detected after ⁶⁰Co irradiation. Peroxidase (POD) and polyphenol oxidase (PPO) activities significantly decreased with increasing temperature and duration of SHS, while ⁶⁰Co radiation completely inactivated PPO. Compared to ⁶⁰Co radiation, SHS treatment inhibited the deterioration of rape bee pollen by avoiding hydroperoxide production and lipid oxidation due to lack of oxygen. These results suggested SHS under 140 ℃ for 2 min was the most suitable to inactivate the microorganisms and enzymes in rape bee pollen with minimal lipid oxidation.

Keywords

Rape bee pollen Superheated steam ⁶⁰Co radiation Microbial counts Enzymatic activity Lipid oxidation

Food Science and Human Wellness

DOI: 10.26599/FSHW.2024.9250414

Cite this article:

Bi Y, Zhou Z, Ni J, et al. Effects of superheated steam treatment on the inactivation of microbial counts, enzyme activity and the inhibition of lipid oxidation of rape bee pollen. Food Science and Human Wellness, 2024, https://doi.org/10.26599/FSHW.2024.9250414