Pleurotus geesteranus was cultivated on the substrates blended with different ratios of treated and untreated Camellia oleifera shells using cottonseed hull as the control substrate. The mycelial growth rate, yield, n...Pleurotus geesteranus was cultivated on the substrates blended with different ratios of treated and untreated Camellia oleifera shells using cottonseed hull as the control substrate. The mycelial growth rate, yield, nutritional composition, ash and heavy metals of the Pleurotus geesteranus cultivated on these substrates were compared. The results suggest that the Camellia oleifera shell in substrate can accelerate the mycelial growth and increase the yield, nutrients and the contents of protein, ash, crude fiber and amino acid of Pleurotus geesteranus. It was found that the contents of tannin and saponin in Camellia oleifera shell affected the mycelial growth rate. The optimal C/N of the substrate for the growth of Pleurotus geesteranus was determined to be 27 ± 0.7. The C/N ratios higher than 30 reduced the protein, fat and soluble sugar contents of the cultivated Pleurotus geesteranus. The contents of heavy metals including Hg, As, Cd and Pb were found in Pleurotus geesteranus cultivated on the substrates containing Camellia oleifera shell complex.展开更多
Using cottonseed hull as the control substrate, different proportions of the untreated and treated Carya cathayensis Sarg shells were added to cultivation of Pleurotus geesteranus. The mycelial growth rate, yield, nut...Using cottonseed hull as the control substrate, different proportions of the untreated and treated Carya cathayensis Sarg shells were added to cultivation of Pleurotus geesteranus. The mycelial growth rate, yield, nutritional composition and contents of heavy metals of the Pleurotus geesteranus cultivated on these substrates were determined. The results suggest that added to treated Carya cathayensis Sarg shell promoted the mycelial growth and increased the yield, biological efficiency and the contents of crude fiber, ash, amino acids and essential amino acids of Pleurotus geesteranus. In addition, the fat content and soluble sugar contents of Pleurotus geesteranus were decreased with the increase of the Carya cathayensis Sarg shell content in substrate, but their contents of heavy metals including mercury (Hg), arsenic (As), cadmium (Cd) and lead (Pb) were higher than that obtained on control substrate.展开更多
Cottonseed hull substrates blended with different ratios of Castanea mollissima Blume shell were prepared and used for the cultivation of Pleurotus geesteranus. The effects of the chestnut shell content on the mycelia...Cottonseed hull substrates blended with different ratios of Castanea mollissima Blume shell were prepared and used for the cultivation of Pleurotus geesteranus. The effects of the chestnut shell content on the mycelial growth rate, yield, nutritional composition and contents of heavy metals of the cultivated Pleurotus geesteranus were investigated. The results suggest that the Castanea mollissima Blume shell in substrate can increase the mycelial growth rate, yield, biological efficiency and the contents of protein, crude fiber, amino acids and essential amino acids of Pleurotus geesteranus. Further investigation suggests that the tannin and saponin in Castanea mollissima Blume shell and the C/N ratio of substrate significantly influence the mycelial growth rate. The crude fat content of Pleurotus geesteranus decreased, while the contents of heavy metals including mercury (Hg), arsenic (As), cadmium (Cd) and lead (Pb) increased with the increase of the Castanea mollissima Blume shell content in substrate. Based on these results, the content of Castanea mollissima Blume shell was optimized to be less than 30% for the cultivation of Pleurotus geesteranus.展开更多
研究秀珍菇子实体多糖(polysaccharide from the fruiting body of Pleurotus geesteranus,PFP)对D-半乳糖致衰老小鼠的保护作用。通过腹腔注射60 mg/(kg·d)D-半乳糖建立衰老小鼠模型,同时灌胃50、100、200 mg/(kg·d)不同剂量...研究秀珍菇子实体多糖(polysaccharide from the fruiting body of Pleurotus geesteranus,PFP)对D-半乳糖致衰老小鼠的保护作用。通过腹腔注射60 mg/(kg·d)D-半乳糖建立衰老小鼠模型,同时灌胃50、100、200 mg/(kg·d)不同剂量的PFP,42 d后,采用试剂盒测定小鼠肝、脑组织中过氧化氢酶(catalase,CAT)、超氧化物歧化酶(superoxide dismutase,SOD)、谷胱甘肽过氧化物酶(glutathione peroxidase,GSH-Px)的活力和丙二醛(malondialdehyde,MDA)的含量;同时,对小鼠血清谷草转氨酶(aspartate aminotransferase,AST)、谷丙转氨酶(alanine aminotransferase,ALT)、碱性磷酸酶(alkaline phosphatas,ALP)活力以及脾脏指数、胸腺指数进行测定;苏木精-伊红染色观察肝、脑组织。结果表明,PFP能拮抗D-半乳糖引起的小鼠衰老,使小鼠肝、脑组织中的CAT、SOD、GSH-Px活力升高,MDA含量降低。与模型组相比,中、高剂量组PFP显著降低小鼠血清的AST、ALP、ALT活力(P<0.05,P<0.01),极显著提高脾脏指数和胸腺指数(P<0.01);组织切片显示PFP对小鼠肝、脑损伤具有保护作用。因此PFP具有良好的抗衰老作用,其机制可能与其提高机体的抗氧化能力、增强机体的免疫功能有关。展开更多
文摘Pleurotus geesteranus was cultivated on the substrates blended with different ratios of treated and untreated Camellia oleifera shells using cottonseed hull as the control substrate. The mycelial growth rate, yield, nutritional composition, ash and heavy metals of the Pleurotus geesteranus cultivated on these substrates were compared. The results suggest that the Camellia oleifera shell in substrate can accelerate the mycelial growth and increase the yield, nutrients and the contents of protein, ash, crude fiber and amino acid of Pleurotus geesteranus. It was found that the contents of tannin and saponin in Camellia oleifera shell affected the mycelial growth rate. The optimal C/N of the substrate for the growth of Pleurotus geesteranus was determined to be 27 ± 0.7. The C/N ratios higher than 30 reduced the protein, fat and soluble sugar contents of the cultivated Pleurotus geesteranus. The contents of heavy metals including Hg, As, Cd and Pb were found in Pleurotus geesteranus cultivated on the substrates containing Camellia oleifera shell complex.
文摘Using cottonseed hull as the control substrate, different proportions of the untreated and treated Carya cathayensis Sarg shells were added to cultivation of Pleurotus geesteranus. The mycelial growth rate, yield, nutritional composition and contents of heavy metals of the Pleurotus geesteranus cultivated on these substrates were determined. The results suggest that added to treated Carya cathayensis Sarg shell promoted the mycelial growth and increased the yield, biological efficiency and the contents of crude fiber, ash, amino acids and essential amino acids of Pleurotus geesteranus. In addition, the fat content and soluble sugar contents of Pleurotus geesteranus were decreased with the increase of the Carya cathayensis Sarg shell content in substrate, but their contents of heavy metals including mercury (Hg), arsenic (As), cadmium (Cd) and lead (Pb) were higher than that obtained on control substrate.
文摘Cottonseed hull substrates blended with different ratios of Castanea mollissima Blume shell were prepared and used for the cultivation of Pleurotus geesteranus. The effects of the chestnut shell content on the mycelial growth rate, yield, nutritional composition and contents of heavy metals of the cultivated Pleurotus geesteranus were investigated. The results suggest that the Castanea mollissima Blume shell in substrate can increase the mycelial growth rate, yield, biological efficiency and the contents of protein, crude fiber, amino acids and essential amino acids of Pleurotus geesteranus. Further investigation suggests that the tannin and saponin in Castanea mollissima Blume shell and the C/N ratio of substrate significantly influence the mycelial growth rate. The crude fat content of Pleurotus geesteranus decreased, while the contents of heavy metals including mercury (Hg), arsenic (As), cadmium (Cd) and lead (Pb) increased with the increase of the Castanea mollissima Blume shell content in substrate. Based on these results, the content of Castanea mollissima Blume shell was optimized to be less than 30% for the cultivation of Pleurotus geesteranus.
文摘研究秀珍菇子实体多糖(polysaccharide from the fruiting body of Pleurotus geesteranus,PFP)对D-半乳糖致衰老小鼠的保护作用。通过腹腔注射60 mg/(kg·d)D-半乳糖建立衰老小鼠模型,同时灌胃50、100、200 mg/(kg·d)不同剂量的PFP,42 d后,采用试剂盒测定小鼠肝、脑组织中过氧化氢酶(catalase,CAT)、超氧化物歧化酶(superoxide dismutase,SOD)、谷胱甘肽过氧化物酶(glutathione peroxidase,GSH-Px)的活力和丙二醛(malondialdehyde,MDA)的含量;同时,对小鼠血清谷草转氨酶(aspartate aminotransferase,AST)、谷丙转氨酶(alanine aminotransferase,ALT)、碱性磷酸酶(alkaline phosphatas,ALP)活力以及脾脏指数、胸腺指数进行测定;苏木精-伊红染色观察肝、脑组织。结果表明,PFP能拮抗D-半乳糖引起的小鼠衰老,使小鼠肝、脑组织中的CAT、SOD、GSH-Px活力升高,MDA含量降低。与模型组相比,中、高剂量组PFP显著降低小鼠血清的AST、ALP、ALT活力(P<0.05,P<0.01),极显著提高脾脏指数和胸腺指数(P<0.01);组织切片显示PFP对小鼠肝、脑损伤具有保护作用。因此PFP具有良好的抗衰老作用,其机制可能与其提高机体的抗氧化能力、增强机体的免疫功能有关。
