Organosulphide profile and hydrogen sulphide-releasing activity of garlic fermented by Lactobacillus plantarum

Tocmo, R. ORCID: https://orcid.org/0009-0007-4850-977X, Nianci Lai, A., Wu, Y., Liang, D., Fogliano, V. and Huang, D. (2017) Organosulphide profile and hydrogen sulphide-releasing activity of garlic fermented by Lactobacillus plantarum. Journal of Functional Foods, 30. pp. 254-259. ISSN 1756-4646 doi: 10.1016/j.jff.2017.01.001

Abstract/Summary

Blanched and unblanched garlic were fermented using L. plantarum for investigation of organosulphide profiles, hydrogen sulphide-releasing activity, pH, titratable activity and microbial growth. Both raw and blanched garlic preparations allowed growth of L. plantarum with corresponding lowering of pH below 4.0 and an increase in titratable acidity from an initial value of less 0.05% to 0.3 and 0.5%, respectively. Fermentation, alone, decreased allicin and vinyl dithiins, but increased the concentration of DATS. The H2S-releasing activity, expressed as DATS-E (mmol DATS/g oil), of raw-fermented (2.91) garlic was not significantly different to that of raw (4.74) garlic, but values in blanched (0.41) and blanched-fermented (0.71) samples significantly decreased. Reductions in DATS-E values in blanched and blanched-fermented garlic corresponded well with the negative effect of blanching on the organosulphide concentrations of the products. Fermentation with L. plantarum retains H2S-releasing activity by increasing DATS, despite notable losses in allicin and allicin transformation products.

Item Type	Article
URI	https://centaur.reading.ac.uk/id/eprint/116570
Identification Number/DOI	10.1016/j.jff.2017.01.001
Refereed	Yes
Divisions	Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Food Microbial Sciences Research Group
Publisher	Elsevier
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