Studies and Analysis of Growth of Aspergillus Niger Fungi on Deproteinized Leaf Juice (dpj)

Current study provides the growth of Aspergillus niger fungi on Deproteinized Leaf Juice (DPJ). The process of green crop fractionation results into three major fractions i.e. pressed crop residue (PCR), leaf protein concentrate (LPC) and deproteinized juice (DPJ). The PCR has been recommended in animal nutrition (Raymond and Harris, 1957). The leaf juice expressed during fractionating of green foliage is employed for the preparation of food grade leaf protein concentrate (LPC). The fungus Aspergillus niger grew well on DPJ samples. The growth of the fungus was evaluated on the basis of the amount of mycelia dry weight(MDW) per 25 ml of DPJ obtained after filtration. The Deproteinized juice (DPJ) released during fractionation of green foliage is considered as a by-product. It is rich in soluble plant nutrients i.e. sugars, free amino acids, amides, vitamins, minerals and other nutrients of plant origin. Random disposal of DPJ may cause environmental biopollution and therefore its use as a source of fertilizer, in animal nutrition or as a medium for growing useful microorganism has been advocated to avoid pollution as well as to make the process of GCF more efficient and economical.