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Glycoalkaloids (α‐Chaconine and α‐Solanine) Contents of Selected Pakistani Potato Cultivars and Their Dietary Intake Assessment
Author(s) -
Aziz Abdul,
Randhawa Muhammad Atif,
Butt Masood Sadiq,
Asghar Ali,
Yasin Muhammad,
Shibamoto Takayuki
Publication year - 2012
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1750-3841.2011.02582.x
Subject(s) - flesh , cultivar , solanum tuberosum , horticulture , chemistry , dry weight , glycoalkaloid , food science , botany , solanaceae , biology , biochemistry , gene
Abstract: Glycoalkaloids (α‐solanine and α‐chaconine) are naturally occurring toxic compounds in potato tuber ( Solanum tuberosum L.) that cause acute intoxication in humans after their consumption. Present research was conducted to evaluate α‐chaconine, α‐solanine, and total glycoalkaloids (TGAs) contents in the peel and flesh portions by high‐performance liquid chromatography method in selected Pakistani potato cultivars. The α‐solanine content varies 45.98 ± 1.63 to 2742.60 ± 92.97 mg/100 g of dry weight (DW) in peel and from 4.01 ± 0.14 to 2466.56 ± 87.21 mg/100 g of DW in flesh. Similarly, α‐chaconine content varied from 4.42 ± 0.16 to 6818.40 ± 211.07 mg/100 g of DW in potato peel and from 3.94 ± 0.14 to 475.33 ± 16.81 mg/100 g DW in flesh portion. The TGA concentration varied from 177.20 ± 6.26 to 5449.90 ± 192.68 mg/100 g of DW in peel and from 3.08 ± 0.11 to 14.69 ± 0.52 mg/100 g of DW in flesh portion of all the potato cultivars tested. All the potato cultivars contained lower concentration of TGA than the limits recommended as safe, except 2 cultivars, that is FD8‐3 (2539.18 ± 89.77 mg/100 g of DW) and Cardinal (506.16 ± 17.90 mg/kg). The dietary intake assessment of potato cultivars revealed that Cardinal, FD 35‐36, FD 8‐3, and FD 3‐9 contained higher amount of TGA in whole potato, although FD 8‐3 only possessed higher content of TGA (154.93 ± 7.75) in its flesh portion rendering it unfit for human consumption. Practical Application: This paper was based on the research conducted on toxic compounds present in all possible potato cultivars in Pakistan. Actually, we quantify the toxic compounds (glycoalkaloids) of potato cultivars through HPLC and their dietary assessment. This paper revealed safety assessment and their application in food industries especially potato processing.