{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T16:58:37Z","timestamp":1789232317624,"version":"build-2803163510"},"reference-count":30,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,12,23]],"date-time":"2022-12-23T00:00:00Z","timestamp":1671753600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Foods"],"abstract":"<jats:p>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)\u2014a sweet syrup derived from the roots of cultivar \u2018New Zealand\u2019, 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 \u00b1 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.<\/jats:p>","DOI":"10.3390\/foods12010074","type":"journal-article","created":{"date-parts":[[2022,12,27]],"date-time":"2022-12-27T07:30:06Z","timestamp":1672126206000},"page":"74","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["A Comprehensive Chemical and Nutritional Analysis of New Zealand Yacon Concentrate"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2977-1955","authenticated-orcid":false,"given":"Keegan","family":"Chessum","sequence":"first","affiliation":[{"name":"Department of Food Science and Microbiology, Auckland University of Technology, Auckland 1010, New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tony","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Food Science and Microbiology, Auckland University of Technology, Auckland 1010, New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0503-9567","authenticated-orcid":false,"given":"Rothman","family":"Kam","sequence":"additional","affiliation":[{"name":"Department of Food Science and Microbiology, Auckland University of Technology, Auckland 1010, New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9551-8715","authenticated-orcid":false,"given":"Mary","family":"Yan","sequence":"additional","affiliation":[{"name":"Healthcare and Social Practice, TePukenga Unitec, Auckland 0612, New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1016\/j.tifs.2010.11.005","article-title":"Yacon, a new source of prebiotic oligosaccharides with a history of safe use","volume":"22","author":"Ojansivu","year":"2011","journal-title":"Trends Food Sci. Technol."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Yan, M.R., Welch, R., Rush, E.C., Xiang, X., and Wang, X. (2019). A Sustainable Wholesome Foodstuff; Health Effects and Potential Dietotherapy Applications of Yacon. Nutrients, 11.","DOI":"10.3390\/nu11112632"},{"key":"ref_3","unstructured":"Nichols, M.A. (2004, January 9\u201312). Research and development of yacon (Smallanthus sonchifolius) production in New Zealand. Proceedings of the International Symposium on Root and Tuber Crops: Food Down Under, Palmerston North, New Zealand. Available online: https:\/\/www.actahort.org\/books\/670\/670_8.htm."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Khajehei, F., Merkt, N., Claupein, W., and Graeff-Hoenninger, S. (2018). Yacon (Smallanthus sonchifolius Poepp. & Endl.) as a Novel Source of Health Promoting Compounds: Antioxidant Activity, Phytochemicals and Sugar Content in Flesh, Peel, and Whole Tubers of Seven Cultivars. Molecules, 23.","DOI":"10.3390\/molecules23020278"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"182","DOI":"10.1016\/j.clnu.2009.01.013","article-title":"Yacon syrup: Beneficial effects on obesity and insulin resistance in humans","volume":"28","author":"Genta","year":"2009","journal-title":"Clin. Nutr."},{"key":"ref_6","unstructured":"Hermann, M., and Hidalgo, O.A. (2005). Yacon Syrup: Principles and Processing, Centro Internacional de la Papa."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"4711","DOI":"10.1021\/jf981305o","article-title":"Extraction and Identification of Antioxidants in the Roots of Yacon (Smallanthus sonchifolius)","volume":"47","author":"Yan","year":"1999","journal-title":"J. Agric. Food Chem."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"793","DOI":"10.1021\/jf020735i","article-title":"Caffeic Acid Derivatives in the Roots of Yacon (Smallanthus sonchifolius)","volume":"51","author":"Takenaka","year":"2003","journal-title":"J. Agric. Food Chem."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1239","DOI":"10.1016\/j.foodchem.2017.11.092","article-title":"Evaluation of nutritional and chemical composition of yacon syrup using 1H NMR and UPLC-ESI-Q-TOF-MSE","volume":"245","author":"Silva","year":"2018","journal-title":"Food Chem."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"84","DOI":"10.1080\/11026480410033999","article-title":"Glycaemic Index","volume":"48","author":"Asp","year":"2004","journal-title":"Scand. J. Nutr."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"5","DOI":"10.1186\/1475-2891-8-5","article-title":"Metabolic effects of low glycaemic index diets","volume":"8","author":"Radulian","year":"2009","journal-title":"Nutr. J."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"451","DOI":"10.1111\/j.1464-5491.1992.tb01816.x","article-title":"Beneficial Effect of a Low Glycaemic Index Diet in Type 2 Diabetes","volume":"9","author":"Wolever","year":"1992","journal-title":"Diabet. Med."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"780","DOI":"10.1093\/jaoac\/76.4.780","article-title":"Comparison of Kjeldahl Method for Determination of Crude Protein in Cereal Grains and Oilseeds with Generic Combustion Method: Collaborative Study","volume":"76","author":"Bicsak","year":"1993","journal-title":"J. AOAC Int."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"111436","DOI":"10.1016\/j.foodres.2022.111436","article-title":"A comprehensive chemical analysis of New Zealand honeydew honey","volume":"157","author":"Chessum","year":"2022","journal-title":"Food Res. Int."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1199","DOI":"10.1038\/1811199a0","article-title":"Antioxidant Determinations by the Use of a Stable Free Radical","volume":"181","author":"Blois","year":"1958","journal-title":"Nature"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"412","DOI":"10.1007\/s13197-011-0251-1","article-title":"Genesis and development of DPPH method of antioxidant assay","volume":"48","author":"Kedare","year":"2011","journal-title":"J. Food Sci. Technol."},{"key":"ref_17","unstructured":"International Organisation for Standardisation (2010). Determination of the Glycaemic Index and Recommendation for Food Classification, The International Organisation for Standardisation."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"3635","DOI":"10.1002\/jssc.200900322","article-title":"Characterization and quantitation of short-chain fructooligosaccharides and inulooligosaccharides in fermented milks by high-performance anion-exchange chromatography with pulsed amperometric detection","volume":"32","author":"Borromei","year":"2009","journal-title":"J. Sep. Sci."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"32","DOI":"10.1179\/1476830514Y.0000000146","article-title":"Cognitive and neuroprotective effects of chlorogenic acid","volume":"20","author":"Heitman","year":"2016","journal-title":"Nutr. Neurosci."},{"key":"ref_20","first-page":"74","article-title":"Caffeic acid: A brief overview of its presence, metabolism, and bioactivity","volume":"3","year":"2020","journal-title":"Bioact. Compd. Health Dis."},{"key":"ref_21","unstructured":"Warren, B. (2014). Uses and Potential Applications of Ferulic Acid. Ferulic Acid: Antioxidant Properties, Uses, and Potential Health Benefits, Nova Science Publishers, Inc.. [1st ed.]."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"460","DOI":"10.1016\/j.foodres.2017.07.035","article-title":"Yacon syrup: Food applications and impact on satiety in healthy volunteers","volume":"100","author":"Silva","year":"2017","journal-title":"Food Res. Int."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"012041","DOI":"10.1088\/1742-6596\/1747\/1\/012041","article-title":"Natural Inhibitors to Increase the Antioxidant Activity of Yacon Tubers Syrup","volume":"1747","author":"Yuanita","year":"2021","journal-title":"J. Phys. Conf. Ser."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1702","DOI":"10.1016\/j.foodres.2010.05.014","article-title":"Control and comparison of the antioxidant capacity of beers","volume":"43","author":"Tafulo","year":"2010","journal-title":"Food Res. Int."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"1378","DOI":"10.3389\/fmicb.2018.01378","article-title":"Comparison of the Antimicrobial Activities of Four Honeys from Three Countries (New Zealand, Cuba, and Kenya)","volume":"9","author":"Morroni","year":"2018","journal-title":"Front. Microbiol."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"939","DOI":"10.1080\/00218839.2020.1723837","article-title":"Polish honey as a source of antioxidants\u2014A comparison with Manuka honey","volume":"59","author":"Lachowicz","year":"2020","journal-title":"J. Apic. Res."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1552","DOI":"10.1111\/1750-3841.15706","article-title":"Bioactive compounds in Apis mellifera monofloral honeys","volume":"86","author":"Viteri","year":"2021","journal-title":"J. Food Sci."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Ili\u0107, T., Dodevska, M., Mar\u010deti\u0107, M., Bo\u017ei\u0107, D., Kodranov, I., and Vidovi\u0107, B. (2020). Chemical Characterization, Antioxidant and Antimicrobial Properties of Goji Berries Cultivated in Serbia. Foods, 9.","DOI":"10.3390\/foods9111614"},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Yan, M.R., Permal, R., Quach, E., Chessum, K., and Kam, R. (2022). Yacon Concentrate NZFOS+, Its Phytochemical Contents, Health-Related Properties and Potential Applications. Med. Sci. Forum, 9.","DOI":"10.3390\/msf2022009041"},{"key":"ref_30","first-page":"413","article-title":"Comparison of Antioxidant Contents of Thai Honeys to Manuka Honey","volume":"22","author":"Bundit","year":"2016","journal-title":"Malays. J. Nutr."}],"container-title":["Foods"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2304-8158\/12\/1\/74\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:49:12Z","timestamp":1760147352000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2304-8158\/12\/1\/74"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,12,23]]},"references-count":30,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2023,1]]}},"alternative-id":["foods12010074"],"URL":"https:\/\/doi.org\/10.3390\/foods12010074","relation":{},"ISSN":["2304-8158"],"issn-type":[{"value":"2304-8158","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,12,23]]}}}