Protein content, amino acid composition and protein quality of Sesbania grandiflora (Turi) and Moringa oleifera (Kelor) leaves

Sulaiman, Nur Sabrina (2019) Protein content, amino acid composition and protein quality of Sesbania grandiflora (Turi) and Moringa oleifera (Kelor) leaves. [Project Paper] (Submitted)

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Abstract

Issue on malnutrition often happens in developing countries including Malaysia whereby underweight and overweight problems coexisted at the same period of time within the whole population. Previously, it was reported that high number of children from low income households as well as children from indigenous people's villages are struggling with underweight and stunting issues. Protein is one the nutrients that plays important role in children's growth and knowing variety of good and easily obtain protein sources may alleviate this problem. Due to limited and variations in previous findings as well as increasing interest in plant proteins, this study was carried out to investigate the protein content, amino acid composition and protein quality of Sesbania grandiflora (Turi) and Moringa oleifera (Kelor) leaves. The leaves were each purchased from two stalls in Pasar Selayang, Selangor and prepared before further analysis using Kjeldahl method, HPLC with fluorescence detector and amino acid score calculation. Results from the analyses were reported as % based on dry matter basis. Protein content of Kelor leaves (36.56% ± 0.000) showed significantly higher content than that of Turi leaves (35.60% ± 0.008), (p < 0.001 ). In both leaves, the compositions of amino acid were almost similar with the presence of 18 amino acids including hydroxyproline. The lowest values appeared to be cysteine and hydroxyproline followed by methionine. The limiting amino acid in both leaves was sulphur amino acids (SAA) and for protein quality, Kelor leaves showed significantly higher (23.56% ± 0.010) amino acid score than Turi leaves (20.08% ± 0.010), (p < 0.00 I) . Although the scores in both leaves were quite low but other essential amino acids met and exceeded the requirements recommended. Kelor and Turi leaves have potential as good plant protein sources and may be consumed with other plant-based food as complementary.

Item Type:	Project Paper
Subjects:	R Medicine > RA Public aspects of medicine
Faculty:	Faculty of Medicine and Health Science
Depositing User:	Ms Norafizah Radzuan
Date Deposited:	30 Sep 2025 03:02
Last Modified:	30 Sep 2025 03:02
URI:	http://psaspb.upm.edu.my/id/eprint/2557

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