The effect of high air temperature in bin drying and milling yield and quality of rice

Date

1988

Abstract

This study was conducted to evaluate the effects of airflow rate and drying air temperature during partial drying on the drying time and grain qualities, namely: percent germination, percent cracked grains, milling recovery, head rice recovery, whiteness, and hardness. Twenty-one treatments, with three levels of airflow rate and seven levels of drying air temperature, were performed on IR-64 rice variety. Significant differences were observed on the drying time, percentage germination, milling recovery and head rice recovery as affected by airflow rate, drying air temperature and their interaction. High percentage germination was obtained at 110°F(33.0% r.h.) drying air temperature regardless of airflow rate. Lower airflow rate and drying air temperature resulted in longer drying time, higher milling recovery and head rice recovery. Moreover, high drying air temperature was found to increasing cracking of grains and to lower the whiteness of milled rice while the interaction of the airflow rate and drying air temperature significantly influenced the hardness of the grain in a non-specific trend.

Document Type

Master Thesis

Degree

Master of Science in in Agricultural Engineering

Language

English

LC Subject

Rice--Drying, Rice--Milling

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 995 1988 A2 C67

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