The fermentation of beet sugar syrup to produce bioethanol

Kenneth A. Leiper, Cornelia Schlee, Ian Tebble, Graham G. Stewart

    Research output: Contribution to journalArticle

    Abstract

    Fermentation of sugar or starch-containing substrates by yeast to produce ethanol for use as a liquid fuel has been an accepted technology for many years. Currently, the most popular substrates are sugar cane molasses and starch from maize or wheat. Interest in renewable liquid fuels is growing and other substrates are now being considered, choice of these depends on local conditions. This paper presents findings from work carried out on syrup from sugar beet, an ideal crop for cultivation in the United Kingdom and parts of Europe. Fermentation of this substrate was found to be successful. The process of backsetting was investigated as a way of reducing water usage and effluent disposal. This was found to have no effect on ethanol production provided compensation was made for increases in gravity caused by glycerol levels. Backsetting was also found to be beneficial to yeast growth. As yeast remain in the fermented substrate, the effect of distillation on yeast cells was also investigated. It was found that dead yeast cells are present in backset and thus persist into subsequent fermentations. This can cause difficulties in viability measurement if the methylene blue method is used. © 2006 The Institute of Brewing & Distilling.

    Original languageEnglish
    Pages (from-to)122-133
    Number of pages12
    JournalJournal of the Institute of Brewing
    Volume112
    Issue number2
    Publication statusPublished - 2006

    Fingerprint

    beet sugar
    bioethanol
    syrups
    fermentation
    yeasts
    starch
    water utilization
    liquids
    methylene blue
    brewing
    ethanol production
    molasses
    distillation
    gravity
    sugar beet
    United Kingdom
    sugarcane
    effluents
    glycerol
    ethanol

    Keywords

    • Backsetting
    • Beet sugar syrup
    • Cell walls
    • Fermentation, yeast

    Cite this

    Leiper, K. A., Schlee, C., Tebble, I., & Stewart, G. G. (2006). The fermentation of beet sugar syrup to produce bioethanol. Journal of the Institute of Brewing, 112(2), 122-133.
    Leiper, Kenneth A. ; Schlee, Cornelia ; Tebble, Ian ; Stewart, Graham G. / The fermentation of beet sugar syrup to produce bioethanol. In: Journal of the Institute of Brewing. 2006 ; Vol. 112, No. 2. pp. 122-133.
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    Leiper, KA, Schlee, C, Tebble, I & Stewart, GG 2006, 'The fermentation of beet sugar syrup to produce bioethanol', Journal of the Institute of Brewing, vol. 112, no. 2, pp. 122-133.

    The fermentation of beet sugar syrup to produce bioethanol. / Leiper, Kenneth A.; Schlee, Cornelia; Tebble, Ian; Stewart, Graham G.

    In: Journal of the Institute of Brewing, Vol. 112, No. 2, 2006, p. 122-133.

    Research output: Contribution to journalArticle

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    Leiper KA, Schlee C, Tebble I, Stewart GG. The fermentation of beet sugar syrup to produce bioethanol. Journal of the Institute of Brewing. 2006;112(2):122-133.