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Zinc fortification: Effect of polishing on parboiled and unparboiled rice

机译：锌强化：抛光对半熟和未半熟大米的影响

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Zinc (Zn) deficiency is one of the causes of anemic disease and mortality in developing countries where rice is the staple food. Such deficiency is enhanced with over polishing of rice grains. Grain Zn contents can be improved through fortification. Agronomic fortification through the use of Wuxal Zn and Antracol (Zn containing fungicide) were tested with BRRI dhan58 and BRRI dhan74 (Zn enriched variety) and compared with no spraying conditions on grain Zn contentin two locations of Bangladesh during 2016-17. Grain yield increased with Zn spraying by about 2–10% for BRRI dhan58 and about 6–18% for BRRI dhan74 compared to control. Grain Zn content in brown rice of BRRI dhan58 under control condition was about 17?mg?kgsup?1/sup that increased to about 19?mg?kgsup?1/sup through Zn spraying. Similarly, Zn content of BRRI dhan74 varied from 22.02 to 23.78?mg?kgsup-1/sup under control condition, which increased to 24.25–25.79?mg?kgsup?1/sup after Zn spraying. Grain non-parboiled polishing at 9–10% reduced Zn content by about 2.6–5.84?mg?kgsup?1/sup irrespective of varieties and locations. Zinc enrichment through agronomic practices and awareness buildup on reduced polishing would be the important options for improving rice grain nutritional quality in Bangladesh.
机译：缺锌是在以大米为主要食物的发展中国家贫血和贫血的原因之一。过度抛光米粒会加剧这种不足。锌的含量可以通过强化来提高。在2016-17年度期间，使用BRRI dhan58和BRRI dhan74（富锌品种）对使用Wuxal Zn和Antracol（含锌的杀真菌剂）的农艺强化进行了测试，并与孟加拉国两个地区无锌喷洒条件进行了比较。与对照相比，锌喷施可使BRRI dhan58的籽粒产量提高约2-10％，而BRRI dhan74的籽粒产量提高约6-18％。在控制条件下，BRRI dhan58糙米中的谷物锌含量约为17？mg？kg ？1 ，通过喷锌增加到约19？mg？kg ？1 。同样，在控制条件下，BRRI dhan74的锌含量在22.02至23.78？mg？kg -1 之间变化，锌后增加到24.25–25.79？mg？kg ？1 。喷涂。不论品种和位置如何，在9–10％的未经预煮的谷物抛光中，锌含量都会减少2.6–5.84？mg？kg ？1 。通过农艺方法富集锌和减少抛光的认识将是改善孟加拉国稻米营养质量的重要选择。

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