Utilization of Molasses

The disposal of sugar beet pulp does not offer any very serious problem, since it can readily be dried and used as a cattle food and it is probable that all the available supplies are absorbed in this way. The utilization of molasses is discussed separately in Section VII. 

Dumbrepatil, A., Adsul, M., Chaudhari, S., Khire, J., and Gokhale, D. 2008. Utilization of molasses sugar for lactic acid production by Lactobacillus del-brueckii subsp. delbrueckii mutant Uc-3 in batch fermentation. Applied and Environmental Microbiology 74 333-335. 

USES. Only a small portion of the molasses available in the United States is consumed by humans. Some molasses is used in industries for the production of yeast and organic fermentation chemicals. But the major utilization of molasses in the United States is in animal feeds, as blackstrap molasses— the molasses left after several boilings. 

An account of work bearing on the utilization of sucrose would not be complete without some mention of the possibilities of the utilization of the residual sirups (molasses) that are produced in large amounts by all sugar factories. 

The present utilization of carbohydrates as a feedstock for the chemical industry is modest, when considering their ready availability, low cost and huge potential [92], The bulk of the annually renewable carbohydrate biomass consists of polysaccharides, but their non-food utilization is still modest. The low-molecular-weight carbohydrates, that is, the constituent units of these polysaccharides, are potential raw materials for several commodity chemicals in fact, glucose (available from cornstarch, bagasse, molasses, wood), fructose (inulin), xylose (hemicelluloses) or the disaccharide sucrose (world production 140 Mtons year-1) are inexpensive and available on a scale of several ten thousands. 

Many chemical products are obtained by fermentation, notably for the utilization of the amount of sucrose remaining in molasses (Scheme 16).221 Thus sucrose and molasses are preferred carbon sources for the preparation of... 

Wee, Y-J., Kim, J-M., Yun, J-S., and Ryu, H-W. 2004. Utilization of sugar molasses for economical l(+)-lactic acid production by batch fermentation of Enterococcus faecalis. Enzme and Microbial Technology 35 568-573. 

Production and Marketing Administration, Sugar Reports, Molasses Issue, annual, 1948-. Supply and utilization of ethyl alcohol. 

Dilute test solutions of molasses undergo chemical and biological changes that alter the adsorbability. Preservatives are of questionable utility in this. If kept in a refrigerator, a dilute molasses solution will usually be stable for 4 to 8 hours. When a new supply of molasses is procured, the stability of a diluted solution should be determined by making decolorizing tests with a standard carbon at hourly intervals. 

Keshk, S.M.A.S., Sameshima, K., 2006b. Utilization of sugar cane molasses with/without the presence of hgnosulfonate for the production of bacterial cellulose. Apphed Microbiology and Biotechnology 72 (2), 291. 

Bednarski, W., Leman, J. and Tomasik, J. (1986) Utilization of beet molasses and whey for fat biosynthesis by a yeast. Agric. Wastes 18, 19-26. 

After establishing that valerate was the best 3HV precursor (and that propionate was no precursor). Page and co-workers [266] used the salt in combination with beet molasses to produce PHBV from strain UWD in a 2.5-L fermentor. Thirty-eight to 40 h of fed-batch regime with various valerate-addition strategies yielded 18 to 22 g copolymer L (59 to 71% of the CDM) containing 8.5 to 23 mol% 3HV. In the absence of valerate, the cells produced only PHB to 23 g L (66% of the CDM). The maximum PHA production rate was 1.1 g L h Small amounts of P(3HB-c<9-45-mol% 3HV) were produced when valerate was the only carbon source. 4-Pentenoate was also used as 3HV precursor in fermentor. The authors claim that the utilization of beet molasses as carbon source should reduce by more than half the cost of PHAs formed from glucose. 

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