Nutritional and resistant starch composition of different fractions of Kernels of a Quality Protein Maize (OPM) and normal maize (Zea mays L.) cultivars.
Date
4-2012
Degree
Bachelor of Science in Chemistry
College
College of Arts and Sciences (CAS)
Adviser/Committee Chair
Rodriguez, Myrna S.
Committee Member
Fajardo, Norma N. Roxas, Pauline Angelique T.
Abstract
Tryptophan, lysine, resistant starch and proximate composition of milled fractions particularly grits and flour of QPM white (IPB Var 6) and yellow normal maize (IPB Var 13) cultivars were determined. Total tryptophan was determined by a rapid method using the glyoxylic acid while total lysine was determined using a colorimetric method with 2- chloro-3,5-dinitropyridine as a reagent for the - amino group of lysine. Resistant starch analysis was based on α-amylase and amyloglucosidase hydrolysis. The grits and flour fractions of QPM white (IPB Var 6) cultivar have significantly higher lysine and tryptophan content but lower crude protein as compared to that of yellow normal maize cultivar. Resistant starch compositions of major products, grits and flour, of the two varieties were found to have significantly higher resistant starch content in QPM white (IPB Var 6) cultivar compared with yellow normal maize (IPB Var 13) cultivar. The mean values of resistant starch composition of grits and flour of QPM white, 8.75% and 7.79%, respectively, were almost twice the value of the grits and flour of yellow normal maize, 4.82% and 4.74%. This study has shown that the QPM white (IPB Var 6), a hybrid of the Institute of Plant Breeding, is a promising line whose major fractions, grits and flour, have nutritional composition that may be beneficial for human consumption.
Language
English
Location
UPLB Main Library Special Collections Section
Call Number
Thesis
Recommended Citation
Mendoza, Jaydee Panaligan, "Nutritional and resistant starch composition of different fractions of Kernels of a Quality Protein Maize (OPM) and normal maize (Zea mays L.) cultivars." (2012). Undergraduate Theses. 315.
https://www.ukdr.uplb.edu.ph/etd-undergrad/315
Document Type
Thesis