Evaluation of NSPRI Parabolic Shaped Solar Dryer (PSSD) for Drying of Tomatoes Under Semi-arid Climate Zone

Evaluation of NSPRI Parabolic Shaped Solar Dryer (PSSD) for Drying of Tomatoes Under Semi-arid Climate Zone | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Evaluation of NSPRI Parabolic Shaped Solar Dryer (PSSD) for Drying of Tomatoes Under Semi-arid Climate Zone Jude Joel, Abba Kaka Alkali, Bala Ibrahim, Adamu Abubakar Ahmmad, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4558322/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 18 You are reading this latest preprint version Abstract This study evaluated the performance of a Parabolic Shaped Solar Dryer (PSSD) developed at Nigerian Stored Products Research Institute Kano (NSPRI) and compared it with an Open Sun Drying (OSD) - Ambient. The evaluation was carried out using Tomatoes ( Eka ). After sorting and washing the fresh tomatoes were sliced into 15 mm thickness and then spread on trays in PSSD and OSD. A thermo-hygrometer was used to record daily temperature and relative humidity. The dried Tomatoes' average drying temperature and relative humidity were 68.2 o C and 50.5% for PSSD, 47.5 o C, and 66.6% for OSD. The average drying rate was 31.6 kg/day for PSSD and 19.7 kg/day for OSD. The result showed that PSSD recorded the highest temperature variation and drying for drying of Tomatoes when compared to OSD. Initial moisture of 89.12% was reduced to a final moisture content of 14.5% for PSSD and 17.8% for OSD after six days of drying. Physiochemical and functional properties of the dehydrated tomato were also carried out. The bacteria count was lower in PSSD (5.8 x 103 Cfu/ml) compared to OSD (7.6 x 10 3 Cfu/ml). However, no fungal growth was observed in OSD where 4.1 x 10 3 Cfu/ml was recorded in PSSD. Sliced Tomato Drying Rate Open Sun Drying Parabolic Shaped Solar Dryer Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 29 Jul, 2024 Reviews received at journal 26 Jul, 2024 Reviews received at journal 25 Jul, 2024 Reviews received at journal 25 Jul, 2024 Reviews received at journal 24 Jul, 2024 Reviewers agreed at journal 24 Jul, 2024 Reviewers agreed at journal 21 Jul, 2024 Reviewers agreed at journal 21 Jul, 2024 Reviewers agreed at journal 20 Jul, 2024 Reviewers agreed at journal 19 Jul, 2024 Reviewers agreed at journal 19 Jul, 2024 Reviews received at journal 02 Jul, 2024 Reviewers agreed at journal 22 Jun, 2024 Reviewers agreed at journal 21 Jun, 2024 Reviewers invited by journal 21 Jun, 2024 Editor assigned by journal 17 Jun, 2024 Submission checks completed at journal 17 Jun, 2024 First submitted to journal 10 Jun, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4558322","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":320889524,"identity":"1275e6ed-49ab-4f6a-8f63-632608b3aa73","order_by":0,"name":"Jude 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Open Sun Drying, Parabolic Shaped Solar Dryer","lastPublishedDoi":"10.21203/rs.3.rs-4558322/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4558322/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThis study evaluated the performance of a Parabolic Shaped Solar Dryer (PSSD) developed at Nigerian Stored Products Research Institute Kano (NSPRI) and compared it with an Open Sun Drying (OSD) - Ambient. The evaluation was carried out using Tomatoes (\u003cem\u003eEka\u003c/em\u003e). After sorting and washing the fresh tomatoes were sliced into 15 mm thickness and then spread on trays in PSSD and OSD. A thermo-hygrometer was used to record daily temperature and relative humidity. The dried Tomatoes' average drying temperature and relative humidity were 68.2 \u003csup\u003eo\u003c/sup\u003eC and 50.5% for PSSD, 47.5 \u003csup\u003eo\u003c/sup\u003eC, and 66.6% for OSD. The average drying rate was 31.6 kg/day for PSSD and 19.7 kg/day for OSD. The result showed that PSSD recorded the highest temperature variation and drying for drying of Tomatoes when compared to OSD. Initial moisture of 89.12% was reduced to a final moisture content of 14.5% for PSSD and 17.8% for OSD after six days of drying. Physiochemical and functional properties of the dehydrated tomato were also carried out. 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