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Quality of potatoes from a sustainability perspective
Thesis (PhD (Nutrition))--University of Pretoria, 2020.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2020
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| _version_ | 1867613503940984832 |
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| access_status_str | Open Access |
| author2 | Schonfeldt, H.C. (Hettie Carina) |
| author_browse | Schonfeldt, H.C. (Hettie Carina) |
| author_facet | Schonfeldt, H.C. (Hettie Carina) |
| collection | Thesis |
| dc_rights_str_mv | © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Thesis (PhD (Nutrition))--University of Pretoria, 2020. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/75024 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:11.641Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/75024 Quality of potatoes from a sustainability perspective Schonfeldt, H.C. (Hettie Carina) vanniekerk.carmen@gmail.com Pretorius, Beulah Muller, Carmen UCTD Solanum tuberosum Environmental impact Life cycle assessment (LCA) Carbon footprint Nutritional quality Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-12 Natural and agricultural sciences theses SDG-15 Thesis (PhD (Nutrition))--University of Pretoria, 2020. In this thesis various quality characteristics of South African potatoes, Solanum tuberosum L. were explored. Ensuring high yielding, quality crops that are adapted to their place of origin are essential in ensuring a sustainable food system that contributes to positive food and nutrition security outcomes. Potato crops from 10 different production regions were analysed using objective and subjective methods. It was found that potatoes are a sustainable food crop with a low environmental impact compared to other staple foods, and they contain high quality protein, although in limited amounts. Data obtained from an Additive Main-Effects and Multiplicative Interactions Model showed external effects have an effect on internal quality attributes of potatoes. Therefore, cultivar is not a reliable predictor of internal attributes. To guide potato classification outcomes, methods were identified that will best predict the internal textural characteristics of the potatoes. This study was expanded to develop an easily repeatable and reliable, scientifically validated method to classify potatoes post-harvest. This project originally started in 2016 as a research project financially supported by Potatoes South Africa followed in 2017 by additional funding from the Department of Trade and Industry (dti THRiP) which aims to promote excellence in research. Funding was also made available by the Department of Science and Technology (DST)/The National Research Foundation (NRF) South African Research Chairs Initiative (SARChl) in the National Development Plan Priority Area of Nutrition and Food Security (Unique number: SARChI170808259212). bs2026 Animal and Wildlife Sciences PhD (Nutrition) Unrestricted SDG-02: Zero hunger SDG-12: Responsible consumption and production SDG-15: Life on land 2020-06-23T07:48:06Z 2020-06-23T07:48:06Z 2020-09-25 2020-04-29 Thesis Muller, C 2020, Quality of potatoes from a sustainability perspective, PhD (Nutrition) Thesis, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/75024> A2021 http://hdl.handle.net/2263/75024 en © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Solanum tuberosum Environmental impact Life cycle assessment (LCA) Carbon footprint Nutritional quality Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-12 Natural and agricultural sciences theses SDG-15 Quality of potatoes from a sustainability perspective |
| title | Quality of potatoes from a sustainability perspective |
| title_full | Quality of potatoes from a sustainability perspective |
| title_fullStr | Quality of potatoes from a sustainability perspective |
| title_full_unstemmed | Quality of potatoes from a sustainability perspective |
| title_short | Quality of potatoes from a sustainability perspective |
| title_sort | quality of potatoes from a sustainability perspective |
| topic | UCTD Solanum tuberosum Environmental impact Life cycle assessment (LCA) Carbon footprint Nutritional quality Natural and agricultural sciences theses SDG-02 Natural and agricultural sciences theses SDG-12 Natural and agricultural sciences theses SDG-15 |
| url | http://hdl.handle.net/2263/75024 |