Oxalate Content of Taro Leaves Grown in Central Vietnam
Leaves were harvested from four different cultivars of Colocasia esculenta and three cultivars of Alocasia odora that were growing on nine different farms in central Vietnam. The total, soluble and insoluble oxalate contents of the leaves were extracted and measured using HPLC chromatography. Total...
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doaj-d70df4239a5140e481f63b21ae1121592020-11-24T23:46:56ZengMDPI AGFoods2304-81582017-01-0161210.3390/foods6010002foods6010002Oxalate Content of Taro Leaves Grown in Central VietnamHang Du Thanh0Hai Phan Vu1Hai Vu Van2Ngoan Le Duc3Tuan Le Minh4Geoffrey Savage5Faculty of Animal Husbandry and Veterinary Medicine, Hue University of Agriculture and Forestry, Hue city, VietnamFaculty of Animal Husbandry and Veterinary Medicine, Hue University of Agriculture and Forestry, Hue city, VietnamFaculty of Animal Husbandry and Veterinary Medicine, Hue University of Agriculture and Forestry, Hue city, VietnamFaculty of Animal Husbandry and Veterinary Medicine, Hue University of Agriculture and Forestry, Hue city, VietnamFaculty of Hospitality & Tourism, Hue University, Hue city, VietnamFood Group, Department of Wine, Food and Molecular Biosciences, Faculty of Agriculture and Life Sciences, Lincoln University, Canterbury 7647, New ZealandLeaves were harvested from four different cultivars of Colocasia esculenta and three cultivars of Alocasia odora that were growing on nine different farms in central Vietnam. The total, soluble and insoluble oxalate contents of the leaves were extracted and measured using HPLC chromatography. Total calcium determinations were also carried out on the same samples. The total oxalate content of the leaves ranged from 433.8 to 856.1 mg/100 g wet matter (WM) while the soluble oxalate ranged from 147.8 to 339.7 mg/100 g WM. The proportion of soluble oxalate ranged from 28% to 41% (overall mean 35%) of the total oxalate content of the leaves. The equivalent insoluble oxalate proportion ranged from 59% to 72% of the total (overall mean 65%). There was little difference between the Colocasia esculenta and Alocasia odora taro cultivars, although the total oxalate content was significantly higher in Alocasia odora cultivars. The overall mean total calcium content was 279.5 mg/100 WM and the percentage of insoluble calcium bound as calcium oxalate ranged from 31.7% to 57.3% of the total calcium content (overall mean 47.1%). The oxalate content in taro leaves is a major factor to consider when different cultivars of taro are recommended for human or animal consumption.http://www.mdpi.com/2304-8158/6/1/2totalsoluble and insoluble oxalatestaro leavescalciumcalcium availability |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hang Du Thanh Hai Phan Vu Hai Vu Van Ngoan Le Duc Tuan Le Minh Geoffrey Savage |
spellingShingle |
Hang Du Thanh Hai Phan Vu Hai Vu Van Ngoan Le Duc Tuan Le Minh Geoffrey Savage Oxalate Content of Taro Leaves Grown in Central Vietnam Foods total soluble and insoluble oxalates taro leaves calcium calcium availability |
author_facet |
Hang Du Thanh Hai Phan Vu Hai Vu Van Ngoan Le Duc Tuan Le Minh Geoffrey Savage |
author_sort |
Hang Du Thanh |
title |
Oxalate Content of Taro Leaves Grown in Central Vietnam |
title_short |
Oxalate Content of Taro Leaves Grown in Central Vietnam |
title_full |
Oxalate Content of Taro Leaves Grown in Central Vietnam |
title_fullStr |
Oxalate Content of Taro Leaves Grown in Central Vietnam |
title_full_unstemmed |
Oxalate Content of Taro Leaves Grown in Central Vietnam |
title_sort |
oxalate content of taro leaves grown in central vietnam |
publisher |
MDPI AG |
series |
Foods |
issn |
2304-8158 |
publishDate |
2017-01-01 |
description |
Leaves were harvested from four different cultivars of Colocasia esculenta and three cultivars of Alocasia odora that were growing on nine different farms in central Vietnam. The total, soluble and insoluble oxalate contents of the leaves were extracted and measured using HPLC chromatography. Total calcium determinations were also carried out on the same samples. The total oxalate content of the leaves ranged from 433.8 to 856.1 mg/100 g wet matter (WM) while the soluble oxalate ranged from 147.8 to 339.7 mg/100 g WM. The proportion of soluble oxalate ranged from 28% to 41% (overall mean 35%) of the total oxalate content of the leaves. The equivalent insoluble oxalate proportion ranged from 59% to 72% of the total (overall mean 65%). There was little difference between the Colocasia esculenta and Alocasia odora taro cultivars, although the total oxalate content was significantly higher in Alocasia odora cultivars. The overall mean total calcium content was 279.5 mg/100 WM and the percentage of insoluble calcium bound as calcium oxalate ranged from 31.7% to 57.3% of the total calcium content (overall mean 47.1%). The oxalate content in taro leaves is a major factor to consider when different cultivars of taro are recommended for human or animal consumption. |
topic |
total soluble and insoluble oxalates taro leaves calcium calcium availability |
url |
http://www.mdpi.com/2304-8158/6/1/2 |
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