1. Edible Pleurotus eryngii Papery Food Prepared by Papermaking Process
Shuang Lv, Xiaolin Zhu, Zhenbin Liu, Liangbin Hu, Dan Xu, Bimal Chitrakar, Haizhen Mo, Hongbo Li Foods. 2022 Nov 4;11(21):3514. doi: 10.3390/foods11213514.
The objective of the current study was to evaluate the feasibility of papery food with Pleurotus eryngii (P. eryngii) as a raw material using the papermaking process. The physical, chemical, structural, and thermal degradation properties were studied as well as the sensory evaluation of the papery food from P. eryngii mycelia (PMP), stems (PSP), caps (PCP), and whole fruiting bodies (PEP). The results indicated that the colors from PSP, PCP, and PEP were clearly different from PMP. Thicker PSP and PMP had a smoother surface and better crispness compared to PCP. Moreover, PSP had better moisture resistance and thermal decomposition performance compared to the other groups. Nutritional composition and Fourier-transform infrared spectroscopy suggested abundant polysaccharide and protein content in all of the papery food. Finally, sensory evaluation showed that the formability, mouth feel, and overall palatability of PSP and PMP were more popular among consumers. Overall, this study provides a novel method for the preparation of papery food and provides a potential new mechanism for the further development and utilization of the fruiting bodies and mycelium of P. eryngii.
2. β-1,6-Glucan From Pleurotus eryngii Modulates the Immunity and Gut Microbiota
Xue Wang, Yunhe Qu, Yuan Wang, Xiang Wang, Jialei Xu, Hailing Zhao, Donglin Zheng, Lin Sun, Guihua Tai, Yifa Zhou, Hairong Cheng Front Immunol. 2022 May 2;13:859923. doi: 10.3389/fimmu.2022.859923. eCollection 2022.
Polysaccharides from Pleurotus eryngii exhibit a variety of biological activities. Here, we obtained a homogeneous branched β-1,6-glucan (APEP-A-b) from the fruiting bodies of P. eryngii and investigated its effect on immunity and gut microbiota. Our results showed that APEP-A-b significantly increases splenic lymphocyte proliferation, NK cell activity and phagocytic capacity of peritoneal cavity phagocytes. Furthermore, we found that the proportion of CD4+ and CD8+ T cells in lamina propria are significantly increased upon APEP-A-b treatment. Additionally, APEP-A-b supplementation demonstrated pronounced changes in microbiota reflected in promotion of relative abundances of species in the Lachnospiraceae and Rikenellaceae families. Consistently, APEP-A-b significantly increased the concentration of acetic and butyric acid in cecum contents. Overall, our results suggest that β-1,6-glucan from P. eryngii might enhance immunity by modulating microbiota. These results are important for the processing and product development of P. eryngii derived polysaccharides.
3. Extraction, structure and bioactivities of the polysaccharides from Pleurotus eryngii: A review
Bingru Zhang, Yanying Li, Fuming Zhang, Robert J Linhardt, Guoyang Zeng, Anqiang Zhang Int J Biol Macromol. 2020 May 1;150:1342-1347. doi: 10.1016/j.ijbiomac.2019.10.144. Epub 2019 Nov 20.
Pleurotus eryngii (also known as king trumpet mushroom or king oyster mushroom) is an edible mushroom cultivated widely in many regions of the world. Polysaccharides from P. eryngii have a variety of biological activities, including anti-oxidant, anti-hyperlipidemic, anti-tumor, immunoregulatory and bacteriostatic. This paper reviews the extraction/purification, structural analysis and pharmacological activities of polysaccharides from this mushroom and provides updated research progress in areas important for the processing and product development of P. eryngii derived agents.
