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Open AccessArticle

Oxalate Content of the Herb Good-King-Henry, Blitum Bonus-Henricus

by Wanying Li *,† and Geoffrey P. Savage
Food Group, Department of Wine, Food and Molecular Biosciences, Lincoln University, Lincoln 7647, Canterbury, New Zealand
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Christopher J. Smith
Foods 2015, 4(2), 140-147; https://doi.org/10.3390/foods4020140
Received: 20 March 2015 / Revised: 5 May 2015 / Accepted: 7 May 2015 / Published: 12 May 2015
The total, soluble and insoluble oxalate contents of the leaves, stems and buds of Good-King-Henry (Blitum Bonus-Henricus) were extracted and measured using HPLC chromatography. The large, mature leaves contained 42% more total oxalate than in the small leaves and the soluble oxalate content of the large leaves was 33% higher than the smaller leaves. Cooking the mixed leaves, stems and buds in boiling water for two minutes significantly (p < 0.05) reduced the total oxalate when compared to the raw plant parts. Pesto sauce made from mixed leaves contained 257 mg total oxalate/100 g fresh weight; this was largely made up of insoluble oxalates (85% of the total oxalate content). Soup made from mixed leaves contained lower levels of total oxalates (44.26 ± 0.49 mg total oxalate/100 g fresh weight) and insoluble oxalate made up 49% of the oxalate contents. The levels of oxalates in the Good-King-Henry leaves were high, suggesting that the leaves should be consumed occasionally as a delicacy because of their unique taste rather than as a significant part of the diet. However, the products made from Good-King-Henry leaves indicated that larger amounts could be consumed as the oxalate levels were reduced by dilution and processing. View Full-Text
Keywords: total; soluble and insoluble oxalates; good-king-henry leaves; stems and buds; pesto; soup total; soluble and insoluble oxalates; good-king-henry leaves; stems and buds; pesto; soup
MDPI and ACS Style

Li, W.; Savage, G.P. Oxalate Content of the Herb Good-King-Henry, Blitum Bonus-Henricus. Foods 2015, 4, 140-147.

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