Content of tocols, gamma-oryzanol and total phenolics and grain quality of brown rice and milled rice applied with pesticides and organic and inorganic nitrogen fertilizer
2011
Tuaño, A.P.P., Philippine Rice Research Inst.-Los Baños, Pili Drive, College, Laguna 4031 (Philippines) | Xu, Z., Louisiana State Univ., Baton Rouge, LA 70803 (USA). Dept. of Food Science | Castillo, M.B. | Mamaril, C.P., Philippine Rice Research Inst.- Los Baños, Pili Drive, College, Laguna 4031 (Philippines) | Manaois, R. V., Philippine Rice Research Inst., Science City of Muñoz, Nueva Ecija 3119 (Philippines). Rice chemistry and Food Science Div. | Romero, M.V., Philippine Rice Research Inst., Science City of Muñoz, Nueva Ecija 3119 (Philippines). Rice Chemistry and Food Science Div. | Juliano, B. O., Philippine Rice Research Inst.-Los Baños, Pili Drive, College, Laguna 4031 (Philippines)
Application of organic and inorganic fertilizer and pesticides to the rice crop had no consistent effect on the content of alpha-tocopherol(vitamin E), alpha-tocotrienol, gamma-tocopherol, gamma-tocotrienol, total tocols and gamma-oryzanol of NSIC Rc 146 and NSIC Rc 160 brown rice and NSIC Rc146 milled rice. Brown rice had more tocols and gamma-oryzanol than milled rice. Total phenoics of NSIC Rc160 brown rice were lower in the control and organic rice than in rice treated with inorganic fertilizer and pesticide. The 1st and 2nd crops of organic milled rice had lower protein content than milled rice treated with inorganic fertilizer, and subsequently tended to have softer Instron cooked rice hardness value and higher Rapid Visco-Analyser(RVA) peak viscosity. Milling quality, color, apparent amylose content and alkali spreading value of rice in the various treatments were similar.
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