Studies on micro nutrient status of rice varieties from farmer's fields of Punjab
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Date
2024
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Punjab Agricultural University
Abstract
Rice (Oryza sativa L) being the staple food and main dietary source of trace elements, it plays a significant role in our diet. Rice varieties like Basmati and Parmal are widely consumed throughout the world and exported from India. Rice is rich in micronutrients and macronutrients. Micronutrient insufficiency is thought to be one of the main causes of the falling rice productivity trends. Rice crop is also reported to accumulate higher concentrations of toxic elements compared to other plants. The presence of heavy metals beyond permissible limits as per regulatory guidelines questions the safety of rice for consumption. Thus, this study highlights the importance of regularly monitoring the nutritional value and heavy metal content in different rice varieties to ensure its safe consumption, especially for people who are heavily reliant on rice as an essential food source. In present study, ICP-MS method was validated for the simultaneous determination of essential micronutrients (Mn, Fe, Ni, Zn, Cu, Co and Se) and heavy metals (Cr, As, Cd and Pb) in rice. The validated method fulfilled all the acceptance criteria (Correlation coefficient (R) ≥ 0.995, Recoveries ranging between 75-125 % and RSD ≤ 20 %) for the parameters: linearity, limit of detection/quantification, accuracy and precision at different levels of concentrations. Five different varieties of Rice (Punjab Basmati 1121, Punjab Basmati 1509, Punjab Basmati 1718, Parmal 126 and Parmal 121) were procured from different districts of Punjab (Hoshiarpur, Ludhiana, Patiala, Kapurthala, Bathinda, Amritsar, Jalandhar, Barnala and Gurdaspur) for micronutrient and heavy metal analysis by using the validated method on ICP-MS. Analytical results demonstrated that PB 1121 of Basmati variety of rice was found nutritionally rich for Fe, Ni, Cu and Zn. However, on the other hand basmati variety PB 1509 rich in Mn and Co whereas maximum Se content reported in PR 121. Similarly, all the rice varieties showed heavy metals content below the permissible limit of FSSAI. However, among other heavy metals i.e. overall Cr and Cd the content was reported to be the highest in PB 1121. Similarly, overall As and Pb contents were reported maximum in PB 1509 and PR 126. However all heavy metals were below the permissible limits of FSSAI. The validated method, thus, can be effectively used in laboratory for routine determination of these micronutrients and heavy metals in rice with acceptable analytical performance.
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Vaishali (2024). Studies on micro nutrient status of rice varieties from farmer's fields of Punjab (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.