Substrate development of pectin sludge and its application in seedling cultivation
The processing of citrus canning produces a large amount of pectin sludge,which was converted into a cultivation substrate using the rapid putrefaction of efficient strains to achieve the resourceful utilisation of pectin sludge that is difficult to be treated with high water-holding capacity.The results showed that the pectinase activity of Trichoderma koningii LZ51 reached 684 U·mL-1;straw pectin substrate(M1)and vermiculite pectin substrate(M2)were produced by mixing and fermenting pectin sludge with straw and vermiculite,respectively,and it was found that the germination and seedling development of cherry red radish,large-leafed spinach and four-season chive were better than that under vermiculite substrate(CK)culture.both had significantly higher performance than vermiculite substrate(CK).In particular,M1 increased the germination rate of the three vegetables by an average of 5%compared with CK;at the seedling stage,M1 produced a 30%increase in fresh weight of cherry red radish compared with CK,and a 50%increase in the fresh weight of large-leaf spinach compared with CK.The use of pectin sludge and straw mixed fermentation to prepare a new type of cultivation substrate opens up a new utilisation pathway for the resourceful utilisation of pectin sludge from canning processing,which has a promising market prospect.
pectin sludgesubstrate fermentationpectin-degrading bacteriaseedling production
NETL
NSTL
万方数据
维普
