Method for extending shelf life of germ remained rice by moderate moistening and electron beam irradiation

Patent metadata

Field	Value
Publication number	US-12484594-B2
Application number	US-202217953303-A
Country	US
Kind code	B2
Filing date	Sep 26, 2022
Priority date	Feb 21, 2022
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A method for extending shelf life of germ remained rice includes evenly spreading the germ remained rice on a sheet tray, and moderately moistening the germ remained rice, packing the germ remained rice moistened, and irradiating the germ remained rice with an electron beam.

First claim

What is claimed is:

1 . A method for extending shelf life of germ-remained rice, the method comprising:
1) evenly spreading the germ-remained rice on a sheet tray, and moderately moistening the germ-remained rice; and 2) packing the germ-remained moistened rice, and irradiating the germ-remained rice with an electron beam; and wherein moderately moistening comprises transferring the sheet tray to a constant climate chamber, and moistening the germ-remained rice at a temperature of 20-30° C. and a relative humidity of 88-99% for 1.0-2.0 hours without spraying water, until moisture seeps through the germ-remained rice; and the germ-remained rice is germ-remained indica rice or germ-remained japonica rice; the germ-remained indica rice is moistened to a moisture content of not more than 14.5%, and the germ-remained japonica rice is moistened to a moisture content of not more than 15.5%; and wherein the germ-remained rice moistened is irradiated with an electron beam at a dose of 0.5 to 1.0 kGy and stored at 25° C. from 75-120 days.

2 . The method of claim 1 , wherein in 1), the germ-remained rice has a germ retention rate of more than or equal to 80%.

3 . The method of claim 1 , wherein in 1), the germ-remained rice is evenly spread on the sheet tray to a thickness of equal to or less than 2 cm.

4 . The method of claim 1 , wherein in 2), packing comprises sealing the moistened germ-remained rice in a bag without removing the air; and the germ-remained rice is evenly spread in the bag to a thickness of not more than 1 cm.

5 . The method of claim 4 , wherein the bag comprises nylon composite.

6 . Germ-remained rice treated by the method of claim 1 .

Assignees

• Univ Jiangnan

Inventors

• Wang Ren
• Jin Yudan
• Li Haibo
• Feng Wei
• Wang Tao
• Zhang Hao

Classifications

• A23L5/55 Primary

  Rehydration or dissolving of foodstuffs · CPC title

• Y02P60/14

  Measures for saving energy, e.g. in green houses · CPC title

• A23L7/196

  Products in which the original granular shape is maintained, e.g. parboiled rice · CPC title

• A23B9/06 Primary

  Preserving by irradiation or electric treatment without heating effect · CPC title

• A23V2002/00

  Food compositions, function of food ingredients or processes for food or foodstuffs · CPC title