Effect of Pre-Harvest Sprouting under Field Conditions on the Milling and Physicochemical Properties of the Floury Rice Cultivar ‘Baromi2’

Seoyeong Yang; Jieun Kwak; Jihyeon Mun; Juhee Kim; Youngseo Song; Jaekyeong Baek; Hyeon-Seok Lee; Jung-Il Cho; Jiyoung Shon

doi:10.7740/kjcs.2025.70.3.142

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2025 Vol.70, Issue 3 Preview Page Next Page

Original Research Article

Effect of Pre-Harvest Sprouting under Field Conditions on the Milling and Physicochemical Properties of the Floury Rice Cultivar ‘Baromi2’ 포장 조건에서의 수발아율에 따른 가루쌀 ‘바로미2’의 도정 및 이화학적 특성 변화

1 September 2025. pp. 142-150

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Abstract

In this study, we investigated milling yield-, grain appearance-, and physicochemical property-related changes in the floury rice cultivar ‘Baromi2’ according to pre-harvest sprouting (PHS) rate. We collected naturally sprouted grains from the field, grouped them into 10 levels ranging from 0% to 50% PHS, and analyzed their milling characteristics, head rice ratio, starch pasting properties, falling number, and color values. Polished rice yield significantly declined at ≥ 20% PHS, while brown rice recovery dropped notably at ≥ 25%. In brown rice, head rice ratio began to decrease at 15% PHS, with increased broken kernels, whereas in white rice, head rice ratio increased at ≥ 30% PHS, with clear visual quality degradation. Starch pasting properties in brown rice sharply declined at ≥ 25% PHS, and falling number dropped significantly at 15% and 30% in brown and white rice, respectively, indicating enzymatic starch degradation. Moreover, PHS reduced the L* and b* values in brown rice, while slightly increasing L* in white rice. However, color differences remained minor in terms of processing quality. These results suggest that visual and enzymatic changes begin at 15% PHS, milling yield loss at 20%, and starch functionality deterioration at 25%. Therefore, maintaining PHS below 20% is recommended to ensure processing suitability in sprouted rice.

Keywords

floury rice

pre-harvest sprouting

quality

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Information

Publisher :The Korean Society of Crop Science
Publisher(Ko) :한국작물학회
Journal Title :The Korean Journal of Crop Science
Journal Title(Ko) :한국작물학회지
Volume : 70
No :3
Pages :142-150
Received Date : 2025-08-07
Revised Date : 2025-08-20
Accepted Date : 2025-08-22
DOI :https://doi.org/10.7740/kjcs.2025.70.3.142

The Korean Journal of Crop Science ISSN:0252-9777(Print) 2287-8432(Online) 한국작물학회지

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