| Loss of L-ascorbic acid in commercial drinking milk caused by milk processing and storage times. | |
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MedLine Citation:
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PMID: 19842423 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The goals of this study were to determine L-ascorbic acid concentrations in various milk products, and to evaluate the effect of storage time on L-ascorbic acid in milk. Commercial plain milk samples were obtained from either a raw-food market or a supermarket, in Mae Hia, Mueang District, Chiang Mai Province, Thailand, during July, 2008. The types of milk were separated based on fat percentages (non fat-0%, low fat-1.5%, full fat-3%), and their method of processing (pasteurization, UHT). All samples were collected, transported, and measured for their L-ascorbic acid concentrations on the same day. The expiration date, type of milk, and source of milk were recorded. Pasteurized milk had higher L-ascorbic acid levels than UHT milk (p < 0.05), but no differences of L-ascorbic acid levels were seen among the milk fat percentage groups. The L-ascorbic acid level was significantly positively related to time before the expiration date of the milk, indicating that increased storage time of milk is related to decreased L-ascorbic acid concentration in the milk. Longer milk storage times resulted in lower- L-ascorbic acid levels and pasteurized milk has higher L-ascorbic acid levels than UHT milk. |
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Authors:
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Nannapat Nalame; Wasana Chaisri; Witaya Suriyasathaporn |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Southeast Asian journal of tropical medicine and public health Volume: 40 ISSN: 0125-1562 ISO Abbreviation: Southeast Asian J. Trop. Med. Public Health Publication Date: 2009 Jul |
Date Detail:
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Created Date: 2009-10-21 Completed Date: 2009-11-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0266303 Medline TA: Southeast Asian J Trop Med Public Health Country: Thailand |
Other Details:
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Languages: eng Pagination: 848-51 Citation Subset: IM |
Affiliation:
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Ruminant Clinic, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, Thailand. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Ascorbic Acid / analysis* Food Handling* Food Preservation* Humans Milk / chemistry* Thailand Time Factors |
| Chemical | |
Reg. No./Substance:
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50-81-7/Ascorbic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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