Cooking quality of upland and lowland rice characterized by different methods

Food Science and Technology (Campinas)

Diva Mendonça Garcia²  Priscila Zaczuk Bassinello¹  Diego Ramiro Palmirez Ascheri¹  José Luis Ramirez Ascheri¹  José Benedito Trovo¹  Rosário De Maria Arouche Cobucci¹ 

[1] ,Instituto Federal GoianoMorrinhos GO ,Brasil

关键词: Oryza sativa L;    texture;    stickiness;    amylase;    gelatinization temperature;    cluster;    Oryza sativa L;    textura;    pegajosidade;    amilose;    temperatura de gelatinização;    agrupamento;   

DOI  :  10.1590/S0101-20612011000200010

来源: SciELO

【 摘 要 】

Rice cooking quality is usually evaluated by texture and stickiness characteristics using many different methods. Gelatinization temperature, amylose content, viscosity (Brookfield viscometer and Rapid Visco Analyzer), and sensory analysis were performed to characterize culinary quality of rice grains produced under two cropping systems and submitted to different technologies. All samples from the upland cropping system and two from the irrigated cropping system presented intermediate amylose content. Regarding stickiness, BRS Primavera, BRS Sertaneja, and BRS Tropical showed loose cooked grains. Irrigated cultivars presented less viscosity and were softer than upland cultivars. Upland grain samples had similar profile on the viscoamylografic curve, but the highest viscosity peaks were observed for BRS Alvorada, IRGA 417, and SCS BRS Piracema among the irrigated cropping system samples. In general, distinct grain characteristics were observed between upland and irrigated samples by cluster analysis. The majority of the upland cultivars showed soft and loose grains with adequate cooking quality confirmed by sensory tests. Most of the irrigated cultivars, however, presented soft and sticky grains. Different methodologies allowed to improve the construction of the culinary profile of the varieties studied.

【 授权许可】

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