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Title: Rice : balancing sustainable agricultural production methods and cultivar diversity with nutrient content and contaminant levels : a Bangladeshi dietary modelling proof of concept project
Author: Falconer, Natasha
ISNI:       0000 0004 7967 6520
Awarding Body: University of Aberdeen
Current Institution: University of Aberdeen
Date of Award: 2019
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In Bangladesh, rice accounts for around 50% for the daily calorie intake. However, arsenic contamination is a persistent health risk, with rice a major contributor of dietary arsenic exposure. Though rice is a rice source of energy it is not rich in many micronutrients, which presents a dual-burden of arsenic exposure and micronutrient malnutrition to populations heavily dependent this staple. From an environmental perspective, cultivation of rice is water intensive, alternative production methods are needed to mitigate water scarcity concerns. The alternate wetting and drying (AWD) technique reduces irrigation water demands in rice cultivation and can reduce arsenic contamination whilst maintain yield. However, with a population reliant on rice as a staple, it is important to determine the impact AWD will have on rice and the contribution this would make to the diet. Although there has been significant progress to alleviating hunger in Bangladesh, many people remain at risk from micronutrient deficiencies and chronic arsenic exposure. Consequently, it is important to examine the impact of AWD on the nutritional quality of rice. It is also important to evaluate post-harvest processing, and cooking changes, alongside measurement of anti-nutrients, such as phytic acid, which may alter the potential bioavailability of nutrients. The current study examined the nutrient and contaminant levels of a subset of six Bangladeshi rice cultivars grown under AWD compared to continuous flooding. Indepth compositional analysis of all six cultivars comparing method of cultivation, variety and level of processing were completed. Additional analysis focused on the commonly consumed BRRI Dhan 28 variety, investigating both raw and cooked brown and processed white rice, and measurement of phytic acid and phenolic acid levels.
Supervisor: Price, Adam ; Kyle, Janet ; Norton, Gareth ; Russell, Wendy R. Sponsor: University of Aberdeen
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Rice ; Trace elements in nutrition ; Arsenic ; Food contamination