Abstract
The objective of the present study was to differentiate and compare the proximate composition, minerals, flesh colour, phenolic composition, and antioxidant activities of varieties of white-fleshed sweet potato (WFSP) and potato (WFP) locally grown in Pakistan. The results showed that WFP presented higher moisture and crude fat content, while WFSP offered better ash, crude protein, and crude fibre contents. Colour analysis revealed that WFSP and WFP showed the highest L* (lightness) values and exhibited the maximum total phenolic content and total flavonoids content of 9.27 ± 0.88 mg GAE/g and 19.01 ± 0.66 mg QE/g. In vitro, results demonstrated that WFSP possessed better antioxidant activity with the highest ferric reducing antioxidant power of 58.67 ± 0.22 mM Fe2+/g and DPPH scavenging activity of 39.12 ± 0.33% compared to WFP. It is concluded that WFSP possesses a better proximate and mineral profile followed by higher antioxidant activity.
Highlights
IntroductionHuman health is linked to nutrition, such as caloric intake and dietary components, which are available naturally [1]
It was observed that moisture and crude fat content were higher in white-fleshed potato (WFP), while ash, crude protein, crude fibre, nitrogen-free extract (NFE), and total energy were higher in white-fleshed sweet potato (WFSP)
The main objection of the present study was to evaluate the antioxidant activity of locally cultivated WFSP and WFP varieties in Pakistan
Summary
Human health is linked to nutrition, such as caloric intake and dietary components, which are available naturally [1]. Synthetic drugs possess undesirable toxicity, either acute or chronic, and are used based on benefit vs adverse effects. It has been known that a vast majority of synthetic drugs cause various health and dietary issues if ingested chronically, such as ulcers, cancer, gastrointestinal disorders, cardiovascular toxicity, and renal damage [2]. Health-conscious people are concerned about the quality of their diet and additives, which may impact their quality of life. This concept brought a revolution in the field of conventional medical therapy, and the term “nutrition therapy” gained special attention over modern drug therapy [3].
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