The effect of Lactobacillus buchneri and L. plantarum, applied at ensiling, on the ensiling fermentation and aerobic stability of wheat and sorghum silages

Z. G. Weinberg, G. Szakacs, G. Ashbell, Y. Hen

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

The effect of applying Lactobacillus buchneri (LB), alone or in combinations with L. plantarum (LP) and yeasts at ensiling, on the ensiling fermentation and aerobic stability of wheat and sorghum silages was studied under laboratory conditions. Treatments comprised LB, LP, yeasts, LB + yeasts, LP + yeasts, LB + LP and B-589 (a lactic acid bacterial strain isolated from wheat silage in Israel) alone. The treatments were also applied to sterilized aqueous extracts of wheat which were incubated at 30°C for 10 days. The pH of all treatments was below 4.0 already on day 4 of the experiment. Silages treated with LB had higher acetic acid concentrations than those treated with LP: 3234 vs 16-18, and 28-34 vs 4-7 g kg-1 in the experiments with wheat and sorghum, respectively. Similar results were obtained in wheat extracts. In the aqueous phase, marked differences in pH decrease were noticed among the treatments: 4.4 in LB, 6.0 in the yeast, and 3.7 in LP and B-589 (from day 3 and onwards). In both crops LB resulted in aerobically stable silages when applied alone or with LP and yeasts, whereas LP resulted in unstable silages upon aerobic exposure; the stability of the LB-treated silages is attributed to the higher acetic acid concentrations. The isolated strain (B-589) did not exhibit any advantage with regard to aerobic stability.

Original languageEnglish
Pages (from-to)218-222
Number of pages5
JournalJournal of Industrial Microbiology and Biotechnology
Volume23
Issue number3
DOIs
Publication statusPublished - Jan 1 1999

Keywords

  • Aerobic stability
  • Lactobacillus buchneri
  • Lactobacillus plantarum
  • Silage

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

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