บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effects of postharvest parameters on functional changes during rough rice storage.

Pearce, M. D., Marks, B. P. and Meullenet, J. F.

Cereal Chemistry. Volume 78, Number3, 2001, Pages 354-357.

2001

บทคัดย่อ

Effects of postharvest parameters on functional changes during rough rice storage.

The expansion of value-added uses for rice has created a demand for quantitative models of functional changes during postharvest handling. Consequently, this study evaluated the effects of postharvest parameters on the functional properties of long-grain (cultivars Cypress and Kaybonnet) and medium-grain (cv. Bengal) rice harvested during the fall of 1996 in Arkansas, USA. The experimental treatments included rough rice drying conditions (low vs. high temperature drying), storage moisture content (10, 12 and 14%), storage temperature (4, 21 and 38 deg C), and storage duration (up to 36 weeks). Milling, cooking and amylograph pasting properties were analysed. Polynomial models (up to third-order) were developed to describe the effects of postharvest factors on the functional properties. Drying treatments, storage moisture content and storage duration affected (P < 0.05) all of the functional properties. Storage temperature influenced (P < 0.01) cooking and pasting properties, but not milling prop erties. Overall, there were significant interactions among the postharvest parameters. Additionally, these factors were related to the functional properties by higher-order relationships.