Abstract

Fermented foods have a longer shelf life and higher nutritional value. Sauerkraut products depend on the quality of the raw material. Not every cabbage variety is suitable for processing. The present research objective was to test several cabbage hybrids for natural fermentation, microbiological parameters, and native sugar content after four months of storage.
The study featured twelve new-generation white cabbage hybrids of Russian selection and sauerkraut foods. The experimental batches were stored for four months at –1–0°C. Fermentation occurred at 21°C and final pH ≤ 3.6. The sugar content and titratable acidity were measured by standard methods. The method of limiting dilutions was applied to determine the microbial count. The microbiological seeding process followed standard procedures.
The highest content of total sugars before fermentation belonged to the late-ripening hybrids Prestizh F₁ (5.92%), Gertsoginya F₁ (5.82%), and Idillia F₁ (5.28%), as well as to the late-ripening Atlant F₁ (5.49%). The greatest sugar content was registered in Prestizh F₁ (4.78%), Kontinent F₁ (4.30%), and Gertsoginya F₁ (4.07%). The mass fraction of titratable acids in terms of lactic acid averaged 1.04% for all the samples. The difference in the chemical composition depended on the hybrid and microbial count during fermentation. The lactic acid bacteria content was as high as 8.17×10⁷ CFU/cm³ in Severyanka F₁. All the samples were resistant to undesirable microflora, i.e., yeasts and molds.
All the cabbage hybrids were suitable for fermentation even after four months of storage. Their own lactic microflora was sufficient for fermentation and traditional sensory properties.

Keywords

White cabbage, quality, fermentation, sugars, lactic acid bacteria, microbiological parameters, nutritional value

Contribution

All the authors contributed equally to the re- search design, experimental studies, data analysis, and drafting.

CONFLICTS OF INTEREST

The authors declare that there is no conf- lict of interest regarding the publication of this article.

FUNDING

The research was performed on the premises of the All-Russian Scientific Research Institute of Vegetable Growing, branch of the Federal Scientific Vegetable Center, as part of research no. FNRN-2019-0069 “Effect of mineral and organic fertilizers on the yield, quality, and storage of new-generation varieties and hybrids of white cabbage, cauliflower, carrot, and beet grown in alluvial meadow non-chernozem soil”.

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