Mitigation of arsenic in rice grains by polishing and washing: Evidencing the benefit and the cost

Author(s)

Pedron, Tatiana ^[1] ; Segura, Fabiana Roberta ^[1] ; Paniz, Fernanda Polio ^[1] ; Souz, Felipe de Moura ^[1] ; dos Santos, Mauro Coelho ^[1] ; de Magalhaes Junior, Ariano Martins ^[2] ; Batista, Bruno Lemos ^[1]

Affiliation

^[1] Fed Univ ABC, Ctr Nat & Human Sci, BR-09210580 Santo Andre, SP - Brazil

^[2] Brazilian Agr Res Corp EMBRAPA, Temperate Climate Ctr, Rodovia BR 392, Km 78, BR-96010971 Pelotas, RS - Brazil

• Document type: Journal article
• Source: JOURNAL OF CEREAL SCIENCE; v. 87, p. 52-58, MAY 2019.
• Web of Science Citations: 0

Abstract

Arsenic (As) mitigation strategies are necessary to decrease As in rice grains. Polishing and washing are important methods to achieve the Codex Alimentarius limits for As. This investigation evaluated a procedure for As-mitigation by removing it from rice grains by polishing and washing for potential implementation in food-industries. It was evaluated the conditions of washing-time, rice:water ratio, temperature, and pH, in which the values were 8 h, 1:2, 35 degrees C, and 6, respectively. The benefits of the processes, polishing and polishing + washing, were the removal of 13.8/40.5%, 15.6/37.9%, and 41.3/54.6% of As in grains polished during 20s, 40s, and 60s, respectively. Approximately 38.8% of As was removed from the husked grains by simple washing. The As-speciation showed a maximum elimination of inorganic As for grains washed + polished 60s. Regarding Cd and Pb, by comparing non-washed husked grains and washed + polished 60s, the removals were 17% and 66%, respectively. The cost of this procedure was the removal of essential elements. Approximately 83%, 95%, 78%, 58%, 45%, and 33% of Mn, Fe, Co, Cu, Zn, and Se, respectively, were removed. Therefore, it is necessary a balance between benefit and cost when using polishing and washing for As-mitigation, especially for populations that have high rice consumption. (AU)

• FAPESP's process: 16/19924-6 - In vitro bioaccessibility assessment and in vivo bioavailability of arsenic ingested through rice commonly consumed by Brazilians
• Grantee: Tatiana Pedron
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 15/06674-9 - Arsenic and rice: monitoring and studies of bioremediation for food safety
• Grantee: Fabiana Roberta Segura
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 14/05151-0 - Arsenic and rice: monitoring and (bio)remediation studies for food safety
• Grantee: Bruno Lemos Batista
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 17/22976-0 - Development of palladium and niobium nanoelectrocatalysts for alkaline direct ethanol fuel cells
• Grantee: Felipe de Moura Souza
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 16/10060-9 - Multi-user equipment (MUE) approved in Grant FAPESP project 2014/05151-0: inductively coupled plasma mass spectrometer hyphenated to an high performance liquid chromatography (HPLC-ICP-MS)
• Grantee: Bruno Lemos Batista
• Support Opportunities: Multi-user Equipment Program
• FAPESP's process: 18/06870-0 - Arsenic and rice: monitoring and (bio)remediation studies for food safety
• Grantee: Fernanda Pollo Paniz
• Support Opportunities: Scholarships in Brazil - Technical Training Program - Technical Training
• FAPESP's process: 17/21846-6 - Nanostructures for environmental remediation and power generation from renewable sources
• Grantee: Mauro Coelho dos Santos
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants