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Potato sprouts as a potential source of solanidine glycoalkaloids for nutritional studies
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1
The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
2
Plant Breeding and Acclimatization Institute, Jadwisin, 05-140 Serock, Poland
Publication date: 2013-10-15
Corresponding author
A. Tuśnio
The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
J. Anim. Feed Sci. 2013;22(4):371-373
KEYWORDS
ABSTRACT
The high price of pure forms of solanidine glycoalkaloids (GA)
impedes their use in studies on the effects and safety levels of GA for farm
animals. An attempt was made to take advantage of the high concentration
of GA in potato sprouts and to evaluate them as a potential source of these
compounds for nutritional experiments. Over a period of two years, two batches
of sprouts were collected from potatoes prepared for planting, dried, and
analysed for α-solanine (S), α-chaconine (CH), and nutrient contents, as well
as trypsin inhibitor activity (TIA). The concentrations of S were 10.52 mg and
8.88 mg · g–1 and of CH, 22.67 and 18.70 mg · g–1 of dried sprouts in batch 1
and batch 2, respectively. The proportions of chaconine and solanine in both
batches were uniform and amounted to 68% and 32% of the sum. The chemical
composition of two batches was similar except for crude fibre content, which
was 3.01% and 9.46% in batch 1 and batch 2, respectively. TIA was low and
uniform (0.41 mg · g–1).
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