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Research Paper | July 1, 2021

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Amino acids of seeds of some acacia taxa as taxonomic marker

Eiman Mohammed Ali Mustafa, Hatil Hashim Alkamali, Ahlam Salih Eltahir, Magdah Abdelbasit Nory Salih

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Int. J. Biosci.19(1), 153-160, July 2021

DOI: http://dx.doi.org/10.12692/ijb/19.1.153-160

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Abstract

The aim of this study is to determine the composition of amino acids in eight Acacia seeds (A cacia mellifera, A. nilotica ssp, adansonia, A. nilotica ssp nilotica, A. oerfota, A. polycantha ssp. campylacantha, A. senegal var senegal, A. seyal var. seyal and A. sieberiana var sieberiana) of the Sudan and to add another marker in the taxonomy of these taxa. The study included a determination of amino acid composition using HPLC followed by pairing affinity between studied taxa based on distribution of free amino acids and fatty acids. The amino acid composition of seeds of the studied eight Acacia taxa indicated that glutamic acid is the most dominant in all Acacia taxa studied highest value appeared in Acacia seyal var. seyal (43.65mg/gm), and the lowest value in Acacia polyacantha ssp. camplacantha (32.62mg/gm). Whereas, methionine is the minor, in Acacia mellifera (1.25mg/gm), and the lowest value noted in Acacia nilotica ssp. nilotica (0.55 mg/gm). Highest degree of pairing affinity noted between Acacia oerfota and Acacia siebriana (89.91%) followed by Acacia nilotica ssp. adansonia and Acacia nilotica ssp. nilotica (71.37%) and between nilotica ssp. nilotica and Acacia seyal var seyal (70.91%), Acacia nilotica ssp. adansonia and Acacia seyal (70.54%) and between Acacia nilotica ssp. nilotica and Acacia siebriana (70.19%). Hence Acacia orefota and Acacia siebriana are the most closely related, also Acacia nilotica adansonia and Acacia nilotica seyal.

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Amino acids of seeds of some acacia taxa as taxonomic marker

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