| Potato processing residue is the waste of potato starch industry. It contais high amount of water and perishable. If such residue could not be dealt with properly, it will make environmental pollution. Therefore, the reaserch made potato processing residue as a new substract's material and used it to cultivate three edible fungi. Three edible fungi were Pleurotus sajor-caju, Pleurotus cornucopiae(Paul.ex Pes)Rolland and Pleurotus lignatilis Gill. This work used response surface analysis to optimize the cultivated method.In addition, the reaserch detected the biological activity of xylanse,β-glucanase and phytase in three mushroom residue. DNS method and ferrisulfas-molybdenum blue Method were been used, in order to make a foundation for mushroom residue's compound feed.The reaserch turn the potato processing residue which was valuless to be utilizable materials without any pollution. It was worth to apply.The experimental results were as follows:(1) The optimal conditions of Pleurotus sajor-caju's cultivation were obtained by response surface analysis as follows:cultivation with 9% potato processing waste in culture medium, at pH 7.0,20℃. The actual output of Pleurotus sajor-caju was 171g, which was very closed to the theoretical value 174.555g. The data was fitting and accuracy, while the model had high reliability. (2) The optimal conditions of Pleurotus cornucopiae(Paul.ex Pes)Rolland's cultivation were:cultivation with 25% potato processing waste and 61% mushroom residue, at pH 7.0,10℃. The actual output of Pleurotus cornucopia was 127g, which was more then the theoretical value 124.977g. The model was reliable and foreseeability.(3) The optimal conditions of Pleurotus lignatilis Gill's cultivation were: cultivation with 29% potato processing waste and 58% mushroom residue, at pH 7.0,18℃. The actual output of Pleurotus lignatilis Gill was 98g, which was closed to the theoretical value 104.717g. The figures was underpinning the model corretly.(4) The Pleurotus sajor-caju's mushroom residue showed phytase's activity at pH 2.5 and pH 5.2 were 0.0822 U/g and 0.0786 U/g respectively, {3-glucanase's activity was 0.0260 U/g, xylanse's activity was 0.0366U/g.(5) The Pleurotus cornucopiae(Paul.ex Pes)Rolland's mushroom residue indicated phytase's activity at pH 2.5 and pH 5.2 were 0.0780 U/g and 0.0679 U/g respectively,β-glucanase's activity was 0.0287 U/g, xylanse's activity was 0.0503U/g.(6) The Pleurotus lignatilis Gill's mushroom residue demonstrated phytase's activity at pH 2.5 and pH 5.2 were 0.1052 U/g and 0.1027 U/g respectively,β-glucanase's activity was 0.0354 U/g, xylanse's activity was 0.0662 U/g. |
