Improvement of Fermented Chinese Cabbage Characteristics by Selected Starter Cultures |
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Authors: | Xue Han Huaxi Yi Lanwei Zhang Weiwei Huang Yingchun Zhang Lili Zhang Ming Du |
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Affiliation: | College of Food Science and Engineering, Harbin Inst. of Technology, , Harbin, 150090 China |
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Abstract: | Traditional fermented vegetables have inconsistent quality and high nitrite content, whereas a commercial starter culture could overcome these problems. A total of 34 lactic acid bacteria strains were screened from 2 homemade naturally fermented Chinese cabbages. Fermented characters of single starter or mixed cultures were examined, including acidification, growth rate, and nitrite depletion ability in the fermented culture. As a result, the combined starter culture (Lactobacillus delbrueckii IWQ and Lactobacillus paracasei J21) was selected. The fermented Chinese cabbage resulted from this mixed starter culture had higher sugar content residue (30.5 mg/mL for mixed culture and 22 mg/mL for control). And the titratable acid of the cabbage fermented by the mixed starter was 110°T, which was twice higher than that of control sample. The selected starter culture also had a better texture and sensory qualities than that the starter cultures from a local fermented Chinese cabbage plant, especially for its significantly lower nitrite content (3.00 mg/kg for mixed culture and 4.49 mg/kg for control). The findings of this study form a database for further studies on the development of starter cultures for fermented cabbage production and could replaced the local plant starter culture. |
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Keywords: | fermented Chinese cabbage fermentation characteristics nitrite content starter culture |
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