Preprint Article Version 1 This version not peer reviewed

Effect of rice cooking methods on postprandial glycaemic response, satiety and palatability, and chewed particle size distribution

Version 1 : Received: 15 April 2017 / Approved: 17 April 2017 / Online: 17 April 2017 (05:35:10 CEST)

A peer-reviewed article of this Preprint also exists.

Lu, L.W.; Venn, B.; Lu, J.; Monro, J.; Rush, E. Effect of Cold Storage and Reheating of Parboiled Rice on Postprandial Glycaemic Response, Satiety, Palatability and Chewed Particle Size Distribution. Nutrients 2017, 9, 475. Lu, L.W.; Venn, B.; Lu, J.; Monro, J.; Rush, E. Effect of Cold Storage and Reheating of Parboiled Rice on Postprandial Glycaemic Response, Satiety, Palatability and Chewed Particle Size Distribution. Nutrients 2017, 9, 475.

Journal reference: Nutrients 2017, 9, 475
DOI: 10.3390/nu9050475

Abstract

Background: Globally, hot cooked refined rice is consumed in large quantities and is a major contributor to dietary glycaemic load. This study aimed to compare the glycaemic potency of hot and cold stored parboiled rice to widely available medium grain white rice. Method: Twenty-eight healthy volunteers participated in a three treatment experiment where postprandial blood glucose was measured over 120 minutes after consumption of 140g of rice. Three rice samples were freshly cooked medium-grain white rice, freshly cooked parboiled rice, and parboiled rice stored overnight at 4 ºC. All rice was served warm at 65 ºC. Chewing time was recorded. Results: The 24-hours cold-stored and reheated parboiled rice resulted in a 42% and 12% lower blood glucose concentration trajectory than freshly cooked medium-grain white rice and freshly cooked parboiled rice. Chewing time for 10g cold stored parboiled rice was 6 seconds (25%) longer and was considered more palatable, visually appealing and better tasting than freshly cooked medium grain (all P<0.05). Conclusions:. For regular consumers of rice reheating cooked rice after cold storage would lower the dietary glycaemic load and long term may reduce risk for type 2 and gestational diabetes. More trials are needed to identify the significance.

Subject Areas

Parboiled rice, medium-grain white rice, cold stored, reheating, blood glucose concentration chewing time, satiety, palatability.

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