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Zia H., Von Ah U., Meng Y. H., Schmidt R., Kerler J., Fuchsmann P.

Biotechnological formation of dairy flavor inducing δ-lactones from vegetable oil.

Food Chemistry, 13, 2022, 1-11.

Agroscope Culture Collection was screened to identify bacterial strains effective in production of dairy flavor inducing lactones using grapeseed oil as a substrate. Lentilactobacillus parafarraginis FAM-1079, Lactococcus lactis subsp. lactis FAM-17918, and L. lactis subsp. lactis biovar diacetylactis FAM-22003 showed the most efficient formation of targeted δ-lactones. The application of sublethal heat stress significantly increased target lactone production. The most profound improvement was for L. lactis subsp. lactis biovar diacetylactis where δ-octadecalactone generation was improved by factor of 9. The pre-fermentation step as well as growth phase in which bacteria are harvested did not have a significant impact on lactones yield. The lactone production process from vegetable oil developed in this study offers a new way of developing a natural flavor ingredient for incorporation into plant-based products.

ISSN Print: 0308-8146
ISSN Online: 1873-7072
Digital Object Identifier (DOI): https://doi.org/10.1016/j.fochx.2022.100220
Publikations-ID (Webcode): 48809 Per E-Mail versenden

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Biotechnological formation of dairy flavor inducing δ-lactones from vegetable oil.