Book chapter
Effects of Nutrient Supplements on Simultaneous Fermentation of Nisin and Lactic Acid from Cull Potatoes
Twenty-Sixth Symposium on Biotechnology for Fuels and Chemicals, pp.475-483
ABAB Symposium, Humana Press
2005
Handle:
https://hdl.handle.net/2376/117205
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 of size 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 ladis subsp. ladis (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. ladis subsp. ladis 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, PullmanYan Liu - Department of Biological Systems Engineering, Washington State University, PullmanShulin Chen - Department of Biological Systems Engineering, Washington State University, Pullman
- Publication Details
- Twenty-Sixth Symposium on Biotechnology for Fuels and Chemicals, pp.475-483
- Series
- ABAB Symposium
- Publisher
- Humana Press; Totowa, NJ
- Identifiers
- 99900583058001842
- Language
- English
- Resource Type
- Book chapter