Lactic acid bacteria and yeasts isolated from the starter doughs for Chinese steamed buns in Thailand
In: Lebensmittel - Wissenschaft + Technologie, Jg. 42 (2009), Heft 8, S. 1404-1412
academicJournal
- print, 3/4 p
Zugriff:
Isolation of lactic acid bacteria (LAB) and yeasts from the starter dough of Chinese steamed buns from four different commercial sources in Thailand was carried out. Thirty-one lactic acid bacteria and eight yeast strains were isolated. Total counts of LAB were from 1.8 x 104 to 108 colonies/g sample, whilst yeasts were very low from 10 to 2.3 x 102 colonies/g sample. The pH values of all starter doughs rangea from 3.36 to 3.52 and the Total Titratable Acidity (TTA) varied from 11.1 to 17.0 ml of 0.1 N NaOH/10 g dough. All LAB isolates were identified as Lactobacillus. The phenotypic characteristics were used to cluster all the LAB isolates into two major groups (Group A and Group B), with the B group subdivide into four groups. Phylogenetic analysis, based upon partial 16S rRNA gene sequences, showed that isolates of Group A, which all contained meso-diaminopimelic acid in their cell wall and produced DL-lactic acid, were closely related to Lactobacillus plantarum, whilst the strains of Group B that produced L-lactic acid were closely related to Lactobacillus casei. For yeasts, eight isolates based on the D1/D2 domain sequences of 26S rRNA were identified as Candida tropicalis, Pichia stipitis, Candida parapsilosis Issatchenkia orientalis and Saccharomyces cerevisiae.
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Lactic acid bacteria and yeasts isolated from the starter doughs for Chinese steamed buns in Thailand
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Autor/in / Beteiligte Person: | LUANGSAKUL, Naphatrapi ; KEERATIPIBUL, Suwimon ; JINDAMORAKOT, Sasitorn ; TANASUPAWAT, Somboon |
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Zeitschrift: | Lebensmittel - Wissenschaft + Technologie, Jg. 42 (2009), Heft 8, S. 1404-1412 |
Veröffentlichung: | Kidlington: Elsevier, 2009 |
Medientyp: | academicJournal |
Umfang: | print, 3/4 p |
ISSN: | 0023-6438 (print) |
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