Indices for the Assessment of Glycoalkaloids in Potato Tubers Based on Surface Color and Chlorophyll Content
Glycoalkaloids (GAs) are toxic to humans at higher concentrations. However, studies also suggest the health benefits of GAs depending on the dose and conditions of use. Methods that have been used to determine GA content in potato tubers are destructive and time-consuming and require skilled personn...
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MDPI AG
2020-12-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/6/4/107 |
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| author | Shimeles Tilahun Hee Sung An Tifsehit Solomon Min Woo Baek Han Ryul Choi Hee Cheol Lee Cheon Soon Jeong |
| author_facet | Shimeles Tilahun Hee Sung An Tifsehit Solomon Min Woo Baek Han Ryul Choi Hee Cheol Lee Cheon Soon Jeong |
| author_sort | Shimeles Tilahun |
| collection | DOAJ |
| description | Glycoalkaloids (GAs) are toxic to humans at higher concentrations. However, studies also suggest the health benefits of GAs depending on the dose and conditions of use. Methods that have been used to determine GA content in potato tubers are destructive and time-consuming and require skilled personnel and high-performance laboratory equipment. We conducted this study to develop indices for the prediction of the level of total GAs in potato tubers at different greening stages based on surface color readings and chlorophyll (Chl) development. Color values (Hunter L*, a*, b*, a*/b*), Chls (Chl a, Chl b, and total Chls) and GA (α-solanine, α-chaconine, and total GAs) content were measured from tubers of ‘Atlantic’ and ‘Trent’ potato cultivars at three-week intervals in up to six greening stages during the storage at room conditions (22 °C, 12-h shift of light-dark cycles). The results have revealed that greening, Chls, and GA content significantly increased for the two cultivars as the stage proceeded. The toxic level of GAs (>200 mg kg<sup>−1</sup> FW) was accumulated at the late greening stages, accompanied by the highest Chl content.<b> </b>Finally, indices were developed based on surface color and Chl content for estimation of the safe GA levels for the consumption of the two commercially and commonly used potato cultivars. Moreover, the developed indices could be used as basic information to adapt to other potato cultivars. |
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| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-10T14:01:11Z |
| publishDate | 2020-12-01 |
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| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-90d4bafb18064e7e83c9f94db8f522122023-11-21T01:05:17ZengMDPI AGHorticulturae2311-75242020-12-016410710.3390/horticulturae6040107Indices for the Assessment of Glycoalkaloids in Potato Tubers Based on Surface Color and Chlorophyll ContentShimeles Tilahun0Hee Sung An1Tifsehit Solomon2Min Woo Baek3Han Ryul Choi4Hee Cheol Lee5Cheon Soon Jeong6Department of Horticulture, Kangwon National University, Chuncheon, Gangwon 24341, KoreaDepartment of Horticulture, Kangwon National University, Chuncheon, Gangwon 24341, KoreaDepartment of Biology, Wollega University, Nekemte 395, EthiopiaDepartment of Horticulture, Kangwon National University, Chuncheon, Gangwon 24341, KoreaDepartment of Horticulture, Kangwon National University, Chuncheon, Gangwon 24341, KoreaDepartment of Horticulture, Kangwon National University, Chuncheon, Gangwon 24341, KoreaDepartment of Horticulture, Kangwon National University, Chuncheon, Gangwon 24341, KoreaGlycoalkaloids (GAs) are toxic to humans at higher concentrations. However, studies also suggest the health benefits of GAs depending on the dose and conditions of use. Methods that have been used to determine GA content in potato tubers are destructive and time-consuming and require skilled personnel and high-performance laboratory equipment. We conducted this study to develop indices for the prediction of the level of total GAs in potato tubers at different greening stages based on surface color readings and chlorophyll (Chl) development. Color values (Hunter L*, a*, b*, a*/b*), Chls (Chl a, Chl b, and total Chls) and GA (α-solanine, α-chaconine, and total GAs) content were measured from tubers of ‘Atlantic’ and ‘Trent’ potato cultivars at three-week intervals in up to six greening stages during the storage at room conditions (22 °C, 12-h shift of light-dark cycles). The results have revealed that greening, Chls, and GA content significantly increased for the two cultivars as the stage proceeded. The toxic level of GAs (>200 mg kg<sup>−1</sup> FW) was accumulated at the late greening stages, accompanied by the highest Chl content.<b> </b>Finally, indices were developed based on surface color and Chl content for estimation of the safe GA levels for the consumption of the two commercially and commonly used potato cultivars. Moreover, the developed indices could be used as basic information to adapt to other potato cultivars.https://www.mdpi.com/2311-7524/6/4/107α-solanineα-chaconinecolor variableschlorophyll contentscolor index |
| spellingShingle | Shimeles Tilahun Hee Sung An Tifsehit Solomon Min Woo Baek Han Ryul Choi Hee Cheol Lee Cheon Soon Jeong Indices for the Assessment of Glycoalkaloids in Potato Tubers Based on Surface Color and Chlorophyll Content Horticulturae α-solanine α-chaconine color variables chlorophyll contents color index |
| title | Indices for the Assessment of Glycoalkaloids in Potato Tubers Based on Surface Color and Chlorophyll Content |
| title_full | Indices for the Assessment of Glycoalkaloids in Potato Tubers Based on Surface Color and Chlorophyll Content |
| title_fullStr | Indices for the Assessment of Glycoalkaloids in Potato Tubers Based on Surface Color and Chlorophyll Content |
| title_full_unstemmed | Indices for the Assessment of Glycoalkaloids in Potato Tubers Based on Surface Color and Chlorophyll Content |
| title_short | Indices for the Assessment of Glycoalkaloids in Potato Tubers Based on Surface Color and Chlorophyll Content |
| title_sort | indices for the assessment of glycoalkaloids in potato tubers based on surface color and chlorophyll content |
| topic | α-solanine α-chaconine color variables chlorophyll contents color index |
| url | https://www.mdpi.com/2311-7524/6/4/107 |
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