Nutritional properties of Philippine farmer-bred maize varieties

Issue Date

12-2018

Abstract

Seed samples from 46 Philippine farmer-bred maize varieties collected from Luzon, Visayas and Mindanao, Philippines, with different kernel color, were evaluated for nutritional composition. At a=0.05, the 46 farmer-bred maize varieties showed variability in their nutritional composition except for ash content. The crude protein content of the varieties ranged 6.12%-17.87% and while the lysine and trypotophan contents ranged 0.10%-0.50% and 0.023%-0.095%, respectively. The crude fat, crude fiber and total carbohydrates content ranged 3.66%-7.29%, 0.93% -5.18% and 69.07%-83.84%, respectively. The average ash content of the maize varieties was 1.60% varying 1.23%-3.13%. The starch content ranged 48.685-87.85% whike the amylose and amylopectin contents ranged 5.94%-28.64% and 26.26%-71.73%, respectively. Mineral contents of the maize varieties were also determined. Potassium content ranged 160.23 mg 100 gˉ¹-387.82 mg 100 gˉ¹ while magnesium ranged 96.81 mg 100 gˉ¹-201.13 mg 100 gˉ¹. The calcium content of the maize while magnesium ranged 14.08 mg 100 gˉ¹-130.10 mg 100gˉ¹ while iron and zinc content ranged from 1.38 mg 100 gˉ¹-8.28 mg 100 gˉ¹ and 0.85 mg 100 gˉ¹-4.99 mg 100 gˉ¹, respectively. The maize varieties also showed good variability in terms of their antioxidant potential. Phytochemicals such as total phenols content (TCC), total flavonoids content (TFC) and total carotenoids content (TCC), and precent scavenging activity were determined. The scavenging activity ranged 14.69%-84.53% while TPC, TFC and TCC ranged 3.18%-7.5%, 2.54 mg CE 100 gˉ¹-7.11 mg CE 100 gˉ¹ and 0.20 mg 100 gˉ¹, respectively. The variability observed revealed that the germplasm used are very promising toward genetic improvement of grain quality traits. Moreover, this study presents baseline information on the nutritional composition of selected Philippine maize farmer-bred varieties for maize varietal improvement.

Source or Periodical Title

Philippine Journal of Crop Science

ISSN

0115-463x

Volume

43

Issue

3

Page

35-46

Document Type

Article

Frequency

tri-quarterly

Physical Description

tables

Language

English

This document is currently not available here.

Share

COinS