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. 2013:2013:574283.
doi: 10.1155/2013/574283. Epub 2013 Sep 22.

Evaluation of fatty acid and amino acid compositions in okra (Abelmoschus esculentus) grown in different geographical locations

Rokayya Sami  1 , Jiang Lianzhou, Li Yang, Ying Ma, Jing Jing
Affiliations

Evaluation of fatty acid and amino acid compositions in okra (Abelmoschus esculentus) grown in different geographical locations

Rokayya Sami et al. Biomed Res Int. 2013.

Abstract

Okra has different uses as a food and a remedy in traditional medicine. Since it produces many seeds, distribution of the plant is also quite easy. Although seed oil yield is low (4.7%), since the linoleic acid composition of the seed oil is quiet high (67.5%), it can still be used as a source of (UNSAT) unsaturated fatty acids. In this study, samples of okra grown in four different locations were analyzed to measure fatty acid and amino acid compositions. The content of the lipid extraction ranged from 4.34% to 4.52% on a dry weight basis. Quantitatively, the main okra fatty acids were palmitic acid (29.18-43.26%), linoleic acid (32.22-43.07%), linolenic acid (6.79-12.34%), stearic acid (6.36-7.73%), oleic acid (4.31-6.98%), arachidic acid (ND-3.48%), margaric acid (1.44-2.16%), pentadecylic acid (0.63-0.92%), and myristic acid (0.21-0.49%). Aspartic acid, proline, and glutamic acids were the main amino acids in okra pods, while cysteine and tyrosine were the minor amino acids. Statistical methods revealed how the fatty acid and amino acid contents in okra may be affected by the sampling location.

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Figures

Figure 1
Figure 1
Typical chromatogram of fatty acid methyl ester prepared from K pod variety oil. Peaks: 1, Myristic acid; 2, Pentadecylic acid; 3, Palmitic acid; 4, Margaric acid; 5, Linoleic acid; 6, Oleic acid; 7, Linolenic acid; 8, Stearic acid; 9, Arachidic acid.
Figure 2
Figure 2
Typical chromatogram of amino acid from K pod variety. Peaks: 1, arginine; 2, threonine; 3, serine; 4, glutamic acid; 5, glycine; 6, alanine; 7, cysteine; 8, valine; 9, methionine; 10, isoleucine; 11, leucine; 12, tyrosine; 13, phenylalanine; 14, lysine; 15, histidine; 16, Linolenic acid; 17, proline.
Figure 3
Figure 3
Plots of the scores for fatty and amino acids content of okra pods.
Figure 4
Figure 4
Plots of the x-loudings for fatty and amino acids content of okra pods.
See this image and copyright information in PMC

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