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Validity of SPME Cryofocusing in Analysis of Volatile Components in Orange Juice
solid-phase microextraction orange juice food flavor
2009/5/31
We studied the effects of cryofocusing on the resolution of volatile components in solid-phase microextraction (SPME). Retention times, resolutions and peak areas estimated using cryofocusing were com...
Validity and Reproducibility of a Semi-Quantitative Food Frequency Questionnaire Adapted to an Israeli Population
Food frequency questionnaire reliability validity Israel
2009/1/16
Assessment of individual representative dietary practices in epidemiologic research has long been a challenge. Given the differences in eating habits and availability of foods between populations, a s...