期刊
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
卷 91, 期 4, 页码 672-679出版社
WILEY
DOI: 10.1002/jsfa.4232
关键词
lactic acid bacteria; Jerusalem artichoke; metabolites; synbiotic functional food
资金
- Bilateral Intergovernmental ST Cooperation [CZ-HU 5/2004, CZ-HU 11/2006]
- Ministry of Education, Youth and Sports (Czech Republic) [MSMT 6046137305]
- National Office for Research and Technology (Hungary)
BACKGROUND: In the tubers of Jerusalem artichoke (Helianthus tuberosus L.) the main carbohydrate is the well-known prebiotic inulin, which is a good growth substrate for gut microorganisms. Jerusalem artichoke tuber is traditionally consumed boiled or pickled rather than in fermented form. Lactic acid bacteria are traditionally used in the production of fermented foods; nevertheless their behavior and metabolite production are considerably influenced by the substrate. The purpose of this study was to investigate the growth and production of the most important sensorically and antimicrobially active metabolites of different Lactobacillus strains on Jerusalem artichoke juice. RESULTS: All investigated strains grew well (in the range 10(9) cfu mL(-1)) in the media. The organic acids (lactic acid, 110-337 mmol L-1; acetic acid, 0-180 mmol L-1; and succinic acid, 0-79 mmol L-1), hydrogen peroxide (0.25-1.77 mg L-1), mannitol (0.06-3.24 g L-1), acetoin and diacetyl production of strains varies not only according to the species but also from strain to strain, which will be demonstrated and discussed in the paper. CONCLUSION: Our results showed that lactobacilli can be used for the fermentation of Jerusalem artichoke, which in this form could be used, alone or mixed with other raw food material, as a new synbiotic functional food. (C) 2011 Society of Chemical Industry
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