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Selection of folate-producing lactic acid bacteria for improving fermented goat milk

Sanna, Maria Giovanna and Mangia, Nicoletta Pasqualina and Garau, Giovanni and Murgia, Marco Ambrogio and Massa, Tomasina G. and Franco, Mario Andrea and Deiana, Pietrino (2005) Selection of folate-producing lactic acid bacteria for improving fermented goat milk. Italian Journal of Food Science, Vol. 17 (2), p. 143-154. ISSN 1120-1770. Article.

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Abstract

Goat milk is a complete food but its low level of folic acid diminisches its nutritional efficacy. In this study, Streptococcus thermophilus, Lactobacillus delbrueckii subsp. bulgaricus, Lb. delbrueckii subsp. lactis and Lb. helveticus strains were selected for folate production in goat milk to improve its quality. A suitable HPLC method was developed to directly determine both total folate and its biologically active derivatives such as 5-methyl-tetrahydrofolate (5- CH3-H4-PteGlu), tetrahydrofolate (H4-PteGlu) and 5 formyl-tetrahydrofolate (5-CHO-H4-PteGlu). Results showed that S. thermophilus, Lb. delbrueckii subsp. lactis and Lb. helveticus strains produced higher amounts of total folate than Lb. delbrueckii subsp. bulgaricus, especially 5-CH3-H4-PteGlu and H4-PteGlu. Moreover the use of selected S. thermophilus strains in association with Lb. delbrueckii subsp. bulgaricus resulted in yoghurt with a significant quantity of folate and good organoleptic features.

Item Type:Article
ID Code:4255
Status:Published
Refereed:Yes
Uncontrolled Keywords:Folate, goat milk, HPLC, LAB, yoghurt
Subjects:Area 13 - Scienze economiche e statistiche > SECS-P/13 Scienze merceologiche
Area 07 - Scienze agrarie e veterinarie > AGR/16 Microbiologia agraria
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
001 Università di Sassari > 01 Dipartimenti > Scienze ambientali agrarie e biotecnologie agro-alimentari
Publisher:Chiriotti Editori
ISSN:1120-1770
Publisher Policy:Depositato per gentile concessione dell'Editore
Deposited On:26 Jul 2010 19:18

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