Journal article
Effects of nutrient supplements on simultaneous fermentation of nisin and lactic acid from cull potatoes
Applied biochemistry and biotechnology, Vol.122(1), pp.475-483
03/2005
Handle:
https://hdl.handle.net/2376/116070
PMID: 15920257
Abstract
The feasibility of using cull potatoes as substrate for the simultaneous production of nisin, a natural food preservative, and lactic acid, a raw material for biopolymer production, was studied. Cull potatoes are potato tubers unacceptable for food processing because ofsize or damage caused by bruising or disease. Although cull potatoes are enriched in various nutrients including starch, minerals, and proteins, they alone still cannot provide enough essential nutrients for the growth and metabolism of Lactococcus lactis subsp. lactis (ATCC 11454). Stimulation of bacterial growth, nisin biosynthesis, as well as lactic acid production was observed when additional nutrients such as yeast extract, peptone from meat, peptone from soy (PS), corn steep solid (CSS), and distillers’ dried grains with solubles were provided. Considering the cost and availability, PS and CSS were selected as nutrient supplements for nisin and lactic acid coproduction. The conditions for nisin biosynthesis and lactic acid coproduction by L. lactis subsp. lactis in a cull potato-based medium were subsequently optimized using a statistically based experimental design.
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Details
- Title
- Effects of nutrient supplements on simultaneous fermentation of nisin and lactic acid from cull potatoes
- Creators
- Chuanbin Liu - Department of Biological Systems Engineering Washington State University 99164-6120 Pullman WAYan Liu - Department of Biological Systems Engineering Washington State University 99164-6120 Pullman WAShulin Chen - Department of Biological Systems Engineering Washington State University 99164-6120 Pullman WA
- Publication Details
- Applied biochemistry and biotechnology, Vol.122(1), pp.475-483
- Academic Unit
- Biological Systems Engineering, Department of; Plant Pathology, Department of
- Publisher
- Humana Press; Totowa
- Identifiers
- 99900547428201842
- Language
- English
- Resource Type
- Journal article