Wheat germ stabilization by infrared radiation
Wheat germ has an important enzymatic activity, being lipases the enzymes which cause the highest impact in the reduction of shelf life. The objective of this study was to evaluate the effects of infrared radiation on wheat germ stabilization in an attempt to extend the shelf life. The effects of tr...
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| Veröffentlicht in: | Journal of food science and technology 2017, Vol.54 (1), p.71-81 |
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| creator | Gili, Renato D. Palavecino, Pablo M. Cecilia Penci, M. Martinez, Marcela L. Ribotta, Pablo D. |
| description | Wheat germ has an important enzymatic activity, being lipases the enzymes which cause the highest impact in the reduction of shelf life. The objective of this study was to evaluate the effects of infrared radiation on wheat germ stabilization in an attempt to extend the shelf life. The effects of treatment time, gap (sample distance to IR emitters) and infrared radiation intensity on wheat germ were analyzed through response surface methodology. Final moisture content, final temperature, color of germ and germ oil quality parameters: free fatty acid content changes and total tocopherol content were the responses evaluated using a Box-Behnken design. A combination of an infrared radiation intensity of 4800 W/m
2
, a 3 min treatment and 0.2 m emitter-sample distance were the best processing condition to stabilize the wheat germ without significantly reduction of the tocopherol content. A confirmatory experiment was conducted with these optimal conditions, and the heat-treated and raw germ samples were stored for 90 days at room temperature in three layer packages to protect them against light and oxygen. The oil quality parameters indicated that the raw germ had a shelf-life of about 15 days, with the heat-treated wheat germ maintaining its quality for at least 90 days under these stored conditions. |
| doi_str_mv | 10.1007/s13197-016-2437-z |
| format | Article |
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2
, a 3 min treatment and 0.2 m emitter-sample distance were the best processing condition to stabilize the wheat germ without significantly reduction of the tocopherol content. A confirmatory experiment was conducted with these optimal conditions, and the heat-treated and raw germ samples were stored for 90 days at room temperature in three layer packages to protect them against light and oxygen. The oil quality parameters indicated that the raw germ had a shelf-life of about 15 days, with the heat-treated wheat germ maintaining its quality for at least 90 days under these stored conditions.</description><identifier>ISSN: 0022-1155</identifier><identifier>EISSN: 0975-8402</identifier><identifier>DOI: 10.1007/s13197-016-2437-z</identifier><identifier>PMID: 28242905</identifier><language>eng</language><publisher>New Delhi: Springer India</publisher><subject>Analysis ; Chemistry ; Chemistry and Materials Science ; Chemistry/Food Science ; Enzymatic activity ; Enzymes ; Fatty acids ; Food ; Food preservation ; Food Science ; Grain ; Heat transfer ; Infrared radiation ; Lipids ; Moisture content ; Nutrition ; Oils & fats ; Original ; Original Article ; Process controls ; Studies ; Triticum aestivum ; Vitamin E ; Wheat</subject><ispartof>Journal of food science and technology, 2017, Vol.54 (1), p.71-81</ispartof><rights>Association of Food Scientists & Technologists (India) 2017</rights><rights>Journal of Food Science and Technology is a copyright of Springer, 2017.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c503t-dde331623bae7d01337fd37d35b0dd1e268a848b465709b75c308921baac12da3</citedby><cites>FETCH-LOGICAL-c503t-dde331623bae7d01337fd37d35b0dd1e268a848b465709b75c308921baac12da3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5305703/pdf/$$EPDF$$P50$$Gpubmedcentral$$H</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5305703/$$EHTML$$P50$$Gpubmedcentral$$H</linktohtml><link.rule.ids>230,314,727,780,784,885,27924,27925,41488,42557,51319,53791,53793</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/28242905$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Gili, Renato D.</creatorcontrib><creatorcontrib>Palavecino, Pablo M.</creatorcontrib><creatorcontrib>Cecilia Penci, M.</creatorcontrib><creatorcontrib>Martinez, Marcela L.</creatorcontrib><creatorcontrib>Ribotta, Pablo D.</creatorcontrib><title>Wheat germ stabilization by infrared radiation</title><title>Journal of food science and technology</title><addtitle>J Food Sci Technol</addtitle><addtitle>J Food Sci Technol</addtitle><description>Wheat germ has an important enzymatic activity, being lipases the enzymes which cause the highest impact in the reduction of shelf life. The objective of this study was to evaluate the effects of infrared radiation on wheat germ stabilization in an attempt to extend the shelf life. The effects of treatment time, gap (sample distance to IR emitters) and infrared radiation intensity on wheat germ were analyzed through response surface methodology. Final moisture content, final temperature, color of germ and germ oil quality parameters: free fatty acid content changes and total tocopherol content were the responses evaluated using a Box-Behnken design. A combination of an infrared radiation intensity of 4800 W/m
2
, a 3 min treatment and 0.2 m emitter-sample distance were the best processing condition to stabilize the wheat germ without significantly reduction of the tocopherol content. A confirmatory experiment was conducted with these optimal conditions, and the heat-treated and raw germ samples were stored for 90 days at room temperature in three layer packages to protect them against light and oxygen. The oil quality parameters indicated that the raw germ had a shelf-life of about 15 days, with the heat-treated wheat germ maintaining its quality for at least 90 days under these stored conditions.</description><subject>Analysis</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Chemistry/Food Science</subject><subject>Enzymatic activity</subject><subject>Enzymes</subject><subject>Fatty acids</subject><subject>Food</subject><subject>Food preservation</subject><subject>Food Science</subject><subject>Grain</subject><subject>Heat transfer</subject><subject>Infrared radiation</subject><subject>Lipids</subject><subject>Moisture content</subject><subject>Nutrition</subject><subject>Oils & fats</subject><subject>Original</subject><subject>Original Article</subject><subject>Process controls</subject><subject>Studies</subject><subject>Triticum aestivum</subject><subject>Vitamin 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D.</au><au>Palavecino, Pablo M.</au><au>Cecilia Penci, M.</au><au>Martinez, Marcela L.</au><au>Ribotta, Pablo D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Wheat germ stabilization by infrared radiation</atitle><jtitle>Journal of food science and technology</jtitle><stitle>J Food Sci Technol</stitle><addtitle>J Food Sci Technol</addtitle><date>2017</date><risdate>2017</risdate><volume>54</volume><issue>1</issue><spage>71</spage><epage>81</epage><pages>71-81</pages><issn>0022-1155</issn><eissn>0975-8402</eissn><abstract>Wheat germ has an important enzymatic activity, being lipases the enzymes which cause the highest impact in the reduction of shelf life. The objective of this study was to evaluate the effects of infrared radiation on wheat germ stabilization in an attempt to extend the shelf life. The effects of treatment time, gap (sample distance to IR emitters) and infrared radiation intensity on wheat germ were analyzed through response surface methodology. Final moisture content, final temperature, color of germ and germ oil quality parameters: free fatty acid content changes and total tocopherol content were the responses evaluated using a Box-Behnken design. A combination of an infrared radiation intensity of 4800 W/m
2
, a 3 min treatment and 0.2 m emitter-sample distance were the best processing condition to stabilize the wheat germ without significantly reduction of the tocopherol content. A confirmatory experiment was conducted with these optimal conditions, and the heat-treated and raw germ samples were stored for 90 days at room temperature in three layer packages to protect them against light and oxygen. The oil quality parameters indicated that the raw germ had a shelf-life of about 15 days, with the heat-treated wheat germ maintaining its quality for at least 90 days under these stored conditions.</abstract><cop>New Delhi</cop><pub>Springer India</pub><pmid>28242905</pmid><doi>10.1007/s13197-016-2437-z</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Analysis Chemistry Chemistry and Materials Science Chemistry/Food Science Enzymatic activity Enzymes Fatty acids Food Food preservation Food Science Grain Heat transfer Infrared radiation Lipids Moisture content Nutrition Oils & fats Original Original Article Process controls Studies Triticum aestivum Vitamin E Wheat |
| title | Wheat germ stabilization by infrared radiation |
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