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107 results on '"Bai, Huijuan"'

21. Antioxidant Activity and Transcriptomic Analysis of Se-Enriched Golden Oyster Mushroom Pleurotus citrinopileatus (Agaricomycetes)

Author

Yang Yang, Nan Chen, Changhui Zhao, Tiehua Zhang, Bai Huijuan, Haiqing Ye, Luheng Qu, Han Xiao, Haiyang Yan, and Jihong Li

Subjects
Antioxidant, medicine.medical_treatment, chemistry.chemical_element, Pleurotus, Applied Microbiology and Biotechnology, Antioxidants, Fungal Proteins, Transcriptome, Biological pathway, Selenium, chemistry.chemical_compound, Pleurotus citrinopileatus, Gene Expression Regulation, Fungal, Drug Discovery, medicine, Food science, Pharmacology, Mushroom, ABTS, biology, Plant Extracts, food and beverages, biology.organism_classification, Sodium selenate, chemistry
Abstract

Food enriched with organic selenium is considered as a good source for selenium supplementation. In the current research, we cultivated Pleurotus citrinopileatus with medium containing different levels of sodium selenate, evaluated the antioxidant activity, and sequenced the transcriptome of the Se-enriched mushroom. Selenium content in Se-enriched mushroom is dependent on selenium level in the surroundings. The ABTS total radical scavenging ability was not significantly different between selenium enriched mushroom and the control, though the total phenol content was increased in Se-enriched mushroom. Transcriptome sequencing showed a total of 1036 differentially expressed genes, including 987 upregulated genes and 49 downregulated genes. These differentially expressed genes are involved in 20 metabolic pathways, most of which are involved in carbon metabolism and amino acid biosynthesis, while many differentially expressed genes are in growth, plasma membrane, and protein binding. It needs to be noted that the sulfur metabolism and ABS transporters, which are closely related with selenium metabolism and transportation, are particularly enriched. The mushroom P. citrinopileatus has strong ability to uptake selenium from the surroundings, which modifies many biological pathways. This paper provides a theoretical reference for the development of Se-enriched fungal foods.

Published
2020

25. Study on mechanical braid technology and special forming device

Author

Wang Songlong, Jiao Xu, Lin Yulong, Li Shuai, Cai Botong, and Bai Huijuan

Subjects
medicine.medical_treatment, Flow (psychology), Process (computing), Mechanical engineering, Production efficiency, Traction (orthopedics), Mathematics::Geometric Topology, Mathematics::Group Theory, Mathematics::Category Theory, Mathematics::Quantum Algebra, medicine, Braid, Cylinder, Mathematics
Abstract

Grass braid is one of the main production methods for drying herbage in Qinghai-Tibet plateau. At present, the braid is mainly made by hands, which has high labor intensity and low production efficiency. In this paper, a braid technology of mechanized grass and a special forming device are put forward. In this paper, a mechanized braid technology and a special forming device are put forward. The process flow of twisting, plying and traction is adopted to make braid. The grass braid forming device mainly includes twisting cylinder, traction roller, and plying rotating cylinder, etc. The analysis shows that the rotating speed of the twisting cylinder should be less than the plying rotating speed. The device is used to make a double braid for loose grass after harvest, which improves the tightness of braid, greatly reduces labor intensity and improves production efficiency.

Published
2020

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