Cited by 20Probiotics and Fermented FoodsEdible Oils Quality and AnalysisFermentation and Sensory Analysis

Single and Multiple Inoculum of Lactiplantibacillus plantarum Strains in Table Olive Lab-Scale Fermentations

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Lanza, Barbara, Zago, Miriam, Di Marco, Sara, Di Loreto, Giuseppina, Cellini, Martina, Tidona, Flavio, Bonvini, Barbara, Bacceli, Martina +1 more·2020·Fermentation

Abstract

In order to improve the olives’ quality, and to reduce the de-bittering time during the table olive fermentation process, it is necessary to pilot the fermentation by inoculating the brine with selected cultures of microorganisms. Some probiotic tests, such as resistance/sensitivity to antibiotics, bile salt hydrolase (BSH) activity, growth at acidic pH, an auto-aggregation assay, and a test of the production of exopolysaccharides, were carried out in order to screen 35 oleuropeinolytic Lactiplantibacillus plantarum subsp. plantarum strains to be used in guided fermentations of table olives. On the basis of the technological and probiotic screening, we analyzed the progress of three different lab-scale fermentations of Olea europaea L. Itrana cv. olives inoculated with spontaneous, single, and multiple starters: jar A was left to ferment spontaneously; jar B was inoculated with a strongly oleuropeinolytic strain (L. plantarum B1); jar C was inoculated with a multiple inoculum (L. plantarum B1 + L. plantarum B51 + L. plantarum B124). The following parameters were monitored during the fermentation: pH, titratable acidity, NaCl concentration, the degradation of bio-phenols, and the enrichment rate of hydroxytyrosol and tyrosol in the olive’s flesh, oil and brine. The degradation of secoiridoid glucosides appeared to be faster in the inoculated jars than in the spontaneously-fermented jar. The production of hydroxytyrosol and ligstroside aglycons was high. This indicated a complete degradation of the oleuropein and a partial degradation of the ligstroside. The multiple inoculum ensured a complete debittering, and could give probiotic traits. The presence of L. plantarum B1 and B124 as a fermentation starter guarantees an optimal trend of de-bittering and fermentation variables, thus ensuring the production of a better final product. L. plantarum B51 could be considered to be a promising probiotic candidate for obtaining probiotic food of completely vegetable origin.

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Crossref · 10.3390/fermentation6040126

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  • Bacteria isolated from the fermentation of olives can survive in acidic environments and are not inhibited in growth by pH 2.0.

    “Thus, bacteria isolated from the fermentation of olives can survive in acidic environments and aren't inhibited in growth by pH 2.0 [37].”

    From Probiotic and Antifungal Attributes of Lactic Acid Bacteria Isolates from Naturally Fermented Brazilian Table Olives (2022) · cites this paper as [37]

    The Introduction identifies the tested strains as L. plantarum isolated from naturally fermented olives. Section 3.1 reports that 33 of 35 strains were not inhibited in growth at pH 2.0, but B15 and B31 were exceptions; the claim omits those exceptions and generalizes beyond the tested strains. Page numbers were not available in our copy. (LLM, conf=0.90)

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  • High auto-aggregation capacity, with values greater than 80%, of LAB isolated from table olive was confirmed.

    “In addition, the high auto-aggregation capacity (values greater than 80%) of LAB isolated from table olive was confirmed [37].”

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  1. Lanza, B.; Di Serio, M.G.; Russi, F.; Iannucci, E.; Giansante, L.; Di Loreto, G.; Di Giacinto, L. Evaluation of the nutritional value of oven-dried table olives (cv. Majatica) processed by the Ferrandina style. Riv. Ital. Sostanze Gr. 2014, 2, 117-127.

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Authors
Lanza, B., Zago, M., Di Marco, S., Di Loreto, G., Cellini, M., Tidona, F., Bonvini, B., Bacceli, M., & Simone, N.
Affiliations
  • Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (IT)
  • Council for Agricultural Research and Economics (CREA), Research Centre for Engineering and Agro-Food Processing (CREA-IT), Via Lombardia, 65012 Cepagatti (PE), Italy
Corresponding author
Lanza, Barbara
Venue
Fermentation
Publisher
MDPI AG
Published
2020-12-18
Volume
6
Issue
4
Pages
126
ISSN
2311-5637 (ISSN-L)
OpenAlex
W3112306860
Cited by
20
References
44
Citations by year
2026: 2 · 2025: 3 · 2024: 4 · 2023: 4 · 2022: 5 · 2021: 2
FWCI
1.78
Type
journal article
Language
en
Open access
Locations
  • Fermentation (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Italian Ministry of Agricultural, Food and Forestry Policies (MiPAAF) (Project INFOLIVA (D.M. 12479/2018), Project DEAOLIVA (D.M. 93882/2017 and D.M. 35902/2019))
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Physical Sciences › Chemistry › Organic Chemistry › Edible Oils Quality and Analysis
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Fermentation and Sensory Analysis
Keywords
Lactobacillus plantarum, table olives, olive fermentation, starter cultures, secoiridoid glycosides, ligstroside, hydroxytyrosol, tyrosol, probiotic screening, brine fermentation, self-aggregation, bile salt hydrolase, exopolysaccharides

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