Poly malic acid producing bacteria screening and optimization of fermentationAbstract: This article shows some characteristics of poly malic acid , its functions and applications in various fields. As the complexity steps and high cost of synthetic poly malic acid, producing poly malic acid fermentation is especially important. The paper is mainly to establish the program to filter out the poly malic acid producing strains SP1、SP2、SP3、SP4 from the nature, then selected the highest yield of bacteria SP3 from the four strains, and to study the conditions of fermentation, the fermentation period is 6-7 days, then from the 8th day it will have a melanoma, and it is irrelevant between the products of poly malic acid and the biomass. And try an easy method of poly malic acid’s determination - spectrometry, but this method needs further researching, so it can be used in determination of poly malic acid.
Keywords：Poly malic acid; Spectrophotometry; Fermentation; Determination
