A comprehensive chemical and nutritional analysis of New Zealand yacon concentrate
Chessum, K.; Chen, T.; Kam, R.; Yan, Mary
View fulltext online
Citation:Chessum, K., Chen, T., Kam, R., & Yan, M. (2022). A comprehensive chemical and nutritional analysis of New Zealand yacon concentrate. Foods, 12(74), 1-12. https://doi.org/10.3390/foods12010074
Permanent link to Research Bank record:https://hdl.handle.net/10652/5938
Global interest in yacon (Smallanthus sonchifolius) is growing due to its potential as a functional food, attributable to its unique profile of bioactives and high fructooligosaccharide (FOS) content, which vary between cultivars. Our objective was to conduct a comprehensive chemical and nutritional analysis of New Zealand yacon concentrate (NZYC)—a sweet syrup derived from the roots of cultivar ‘New Zealand’, which was first grown in the 1980s. The major minerals in NZYC were potassium, phosphorus, and calcium. The FOS content ranged from 17.6 to 52.7 g/100g. Total phenolic content ranged from 565 to 785 mg gallic acid equivalents per 100 g; chlorogenic acid and caffeic acid were the major phenolic compounds. The major amino acids were L-arginine, L-glutamic acid, L-proline, L-aspartic acid, and asparagine. The major organic acids were citric, malic, quinic, and fumaric acids. Antioxidant activity ranged from 1084.14 to 3085.78 mg Trolox equivalents per 100 g depending on the assay used. The glycaemic index (GI) value was 40 ± 0.22, classifying it as a low-GI food. These results support the classification of NZYC as a nutraceutical food product for future diet therapy applications.
Keywords:New Zealand, yacon (Smallanthus sonchifolius), yacon concentrate, fructo-oligosaccharides, phenolic compounds, antioxidant activity, glycaemic index
ANZSRC Field of Research:3210 Nutrition and dietetics
Copyright Holder:© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Rights:This digital work is protected by copyright. It may be consulted by you, provided you comply with the provisions of the Act and the following conditions of use. These documents or images may be used for research or private study purposes. Whether they can be used for any other purpose depends upon the Copyright Notice above. You will recognise the author's and publishers rights and give due acknowledgement where appropriate.
MetadataShow detailed record
This item appears in
The following license files are associated with this item: