Phytochemicals and nutritional composition in accessions of Kei-apple (Dovyalis caffra): Southern African indigenous fruit

Semkaleng Mpai; Rosemary du Preez; Yasmina Sultanbawa; Dharini Sivakumar

doi:10.1016/j.foodchem.2018.01.099

Phytochemicals and nutritional composition in accessions of Kei-apple (Dovyalis caffra): Southern African indigenous fruit

Food Chem. 2018 Jul 1:253:37-45. doi: 10.1016/j.foodchem.2018.01.099. Epub 2018 Jan 31.

Authors

Semkaleng Mpai¹, Rosemary du Preez², Yasmina Sultanbawa³, Dharini Sivakumar⁴

Affiliations

¹ Phytochemical Food Network Research Group, Department of Crop Sciences, Tshwane University of Technology, Pretoria West. 0001, South Africa.
² Institute for Tropical and Subtropical Crops Agricultural Research Council - Agricultural Research Council, Nelspruit, South Africa.
³ Queensland Alliance for Agriculture and Food Innovation, Center for Food Science and Nutrition, The University of Queensland, Australia.
⁴ Phytochemical Food Network Research Group, Department of Crop Sciences, Tshwane University of Technology, Pretoria West. 0001, South Africa. Electronic address: SivakumarD@tut.ac.za.

PMID: 29502841
DOI: 10.1016/j.foodchem.2018.01.099

Abstract

Current study was initiated to identify the phytochemicals and the nutritional profile of eleven Kei-apple fruit accessions. Accession FH29 showed the highest level (492.45 mg 100 g^-1 fresh weight) of total phenolic content, higher than the referral fruit, blueberry. Pyrogallol was identified as the predominant phenolic compound in all accessions. Accession FH 29 showed the highest (49.75 µmol TEAC g^-1 fresh weight) antioxidant capacity. Catechin content was higher in accessions; FH151, FH15, FH14, FH29, FH243, FH 239 and FH 231. Accessions, FH14 and FH232 exhibited higher levels of β-carotene than the referral fruit apples (cv. Top red) and peaches (cv. Excellence). The total sugar (glucose and fructose) was highest (50 mg g^-1 fresh weight) in accession FH240. Asparagine (3122.18 mg L^-1) and gamma-aminobutyric (1688.87 mg L^-1) were higher in accessions FH239 and FH243 respectively. Overall, the accession Kei-apple FH236 can be regarded as a good source of essential amino acids.

Keywords: Bioactive compounds; Phenylalanine; Pyrogallol; Traditional fruits; β-Carotenes.

MeSH terms

Antioxidants / analysis
Fruit / chemistry*
Nutritive Value*
Phytochemicals / analysis*
Salicaceae / chemistry*

Substances

Antioxidants
Phytochemicals