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|Title:||The contents of lignans in commercial sesame oils of Taiwan and their changes during heating|
|Abstract:||Sesame lignans have multiple functions and were recently reported to have potential as sources of phytoestrogens. Sesame oils used in Taiwan are expelled from roasted sesame seeds with dark colour and strong flavour. This study analyzed lignan contents of 14 brands of sesame oils, and found their mean of total lignans to be 11.5g/g; 82% and 15% of the lignans were sesamin, and sesamolin, respectively. Sesamol contents were relatively higher in those with darker colour. In use as a cooking oil, heating at 180C for 4in did not change the content of lignans, but the level of sesamol increased after heating at 180C for 20in. Heating at 200C for 20in caused a significant loss of sesamolin and sesamol. From our calculation, ingestion of 10 of sesame oil is adequate to provide the level of lignans that might benefit cardiovascular health, as found by other studies. Cooking at temperatures above 200C will cause loss of some lignans, but sesamin, a source of phytoestrogen, is relatively heat-stable.|
|Appears in Collections:||教師著作|
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