Production of protein-rich poultry feed ingredient from discarded spinach

Abstract

Guava waste peel is highly prone to hydrolysis by mixtures enzymes which consists of cellulolytic and pectinolytic where give it prospective as feedstock for biological transformation to value added products. The peel of guava waste is quite rich in vitamins and minerals. Aspergillus niger was studied for their capability to break down guava waste peel under solid state fermentation (SSF) process. This study assessed the effects of fermentation process parameters such as temperature and incubation time on the biodegradation of guava waste peel into protein enriched biomass using A. niger as a microbe for fermentation. Meanwhile, the physiochemical (moisture content and organic matter) and nutritional (protein content) constituent of discarded guava peel was also has been studied before and after fermentation process. After fermentation, the physiochemical and nutritional constituents showed a slightly increase in the quantity. The production of protein enriched biomass from guava waste peel as a substrate in the fermentation process was found to be produced at higher amount by temperature of 40 ˚C and 72 hours of incubation time with inoculum size of 106 spores/ml. The greatest amount of protein of 8% was gained with A. niger after fermentation. This investigation has revealed the potential for production of protein from discarded guava peel via solid state fermentation process.