Percent of lactic acid actually produced out of theoretical yield by L. lactis grown on trunk sap

Value 89.9 %
Organism Oil palm Elaeis guineensis
Reference Kosugi A, Tanaka R, Magara K, Murata Y, Arai T, Sulaiman O, Hashim R, Hamid ZA, Yahya MK, Yusof MN, Ibrahim WA, Mori Y. Ethanol and lactic acid production using sap squeezed from old oil palm trunks felled for replanting. J Biosci Bioeng. 2010 Sep110(3):322-5 p. 325 left column Table - link PubMed ID20547348
Method L. lactis ATCC19435S was grown on sap from the inner part of the trunk to produce lactic acid. As shown in Fig. 3, glucose in the sap was readily converted to lactic acid. Likewise in ethanol fermentation, no additional nutrients were required and no growth inhibition was observed. Glucose, sucrose, fructose, and galactose, at initial concentrations of 16.7 g/L, 1.28 g/L, 0.79 g/L, and 0.18 g/L, respectively, in the medium were completely consumed after 72 h. The lactic acid yield was 89.9% of the theoretical yield based on consumption of these 4 sugars.
Comments In order to utilize the old palm trunks felled for replanting, especially the inner part, researchers attempted to produce bioethanol and lactic acid, the material for bio-plastics, from felled trunks. See table for sap content.
Entered by Uri M
ID 105668