Nur Anisya Syakirah Mohd SayutiSyamila Mansor2024-05-312024-05-312021-09-09https://oarep.usim.edu.my/handle/123456789/18560"Date: 9 September 2021 Platform: MSTeams, USIM Nilai, Negeri Sembilan, Malaysia."Modernization of agro-food sector through the application of innovation and technologies is one of the new directions envisioned from the Ministry of Agriculture and Agro-based Industry (MOA). This involves food-based plant being grown as a buffer for better profit returns. In every harvest of sweet potato’s root (Ipomoea batatas L.), the rest of the plant parts (stems, leaves, and stalks) which is collectively called “haulm” will be leaved behind on the field. Haulm is a potential source of chloroplasts that contain high nutrients and phytochemicals. In the present study, proximate analysis, water activity and colour analysis of chloroplast-rich fraction (CRF) from sweet potato haulm treated with conventional pasteurisation (CP), steam pasteurisation (SP) and water blanching (WB) were performed. The different treatments on sweet potato haulm significantly affect the crude fat and ash content in the CRF with values ranged between 1.99-3.86% and 12.82-13.67%, respectively. There was no significant difference measured in water activity for all treated CRF. Total colour difference between CRF from CP and SP was the lowest (ΔE 2.88) while total colour difference between CRF from CP and WB, and CRF from SP and WB were higher with values of ΔE 8.93 and 7.31, respectively. Hence, the colour difference was easily distinguish with naked eye for CRF from WB compared to CRF from CP and SP. This study offers a sustainable source of nutrients, and alternative usage of agriculture waste in the circular economy by upcycling the essential nutrients in the haulm.enProcessing treatments,chloroplast-rich fraction,sweet potato haulm, .physicochemical analysisArticle