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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (11): 134-141.doi: 10.11924/j.issn.1000-6850.casb2023-0412

Special Issue: 植物保护

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Comparison of Combined Transformation Ability of Pleurotus pulmonarius and Protaetia brevitarsis Larvae to 11 Kinds of Forest Fruit Branch Waste

ZHAO Wei(), ZHAO Chuanyue, KONG Hao, XIE Xingtong, WANG Li()   

  1. Shandong Provincial Key Laboratory of Agricultural Microbiology, College of Plant Protection, Shandong Agricultural University, Tai’an, Shandong 271018
  • Received:2023-05-31 Revised:2023-08-23 Online:2024-04-15 Published:2024-04-11

Abstract:

In order to explore the combined transformation ability of saprophytic edible fungus-Pleurotus pulmonarius and saprophytic insect- Protaetia brevitarsis larvae (PBL) to 11 kinds of forest and fruit tree branch waste, P. pulmonarius PL2 strain was used to biotransform different forest and fruit tree branches, and the mycelial growth rate, fruiting body yield, fruiting body polysaccharide content and antioxidant activity of fruiting body extract were determined. After that, the spent substrate of P. pulmonarius based on 11 kinds of wood branches was biotransformed by PBL, and the Hassan method was used to comprehensively evaluate the combined transformation effect of P. pulmonarius and PBL on 11 kinds of wood branches. The results showed that there were significant differences in the mycelial growth rate, fruiting body yield, fruiting body polysaccharide content and fruiting body antioxidant activity of P. pulmonarius strains among different types of branches. The mycelial growth rate was the fastest in beech wood (10.05 mm/d), the biological efficiency was the highest in honeysuckle branches (68.95%), the polysaccharide content was the highest in peach wood (9.52%), and the comprehensive antioxidant activity was the strongest in poplar wood (OD 0.6409). Further studies showed that there were significant differences in the combined transformation effect of P. pulmonarius and PBL on 11 kinds of branches. Among them, the combined transformation effect on honeysuckle branches was the best. 1 kg honeysuckle branches could produce 846.19 g of P. pulmonarius fruiting bodies. The weight gain of PBL was 45.97 g, and the amount of larvae frass production was 499.54 g. The results of this study showed that the combined conversion effect of P. pulmonarius and PBL on forest fruit tree branch waste was significant and had certain application value, which could provide theoretical basis for the ecological high-value utilization of forest fruit tree branch waste resources.

Key words: forest and fruit trees sawdust, Pleurotus pulmonarius, Protaetia brevitarsis larvae (PBL), biotransformation