Publication:
Chromaticity, antioxidant, and antimicrobial activity of lutein and β-carotene from local pumpkin and sweet potato

cris.virtual.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.department20bd4175-2d0c-4319-922b-4c3036cef21e
cris.virtualsource.orcid20bd4175-2d0c-4319-922b-4c3036cef21e
dc.contributor.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#en_US
dc.contributor.authorAinaa Eliah Abu Bakar
dc.date.accessioned2024-10-08T05:42:58Z
dc.date.available2024-10-08T05:42:58Z
dc.date.issued2019
dc.description.abstractCarotenoids are coloured Carotenoids are coloured pigments that found in nature which have their specific colour range of yellow, orange and red colours. Colour plays an important role to make sure the products are attractive to the consumers. The natural colorant is colouring that can be obtained from natural sources such as plants, vegetables, animals and minerals. This study established that the working scheme via open column chromatography (OCC) established from pumpkin and sweet potato demonstrated that isolation of the β-carotene and lutein pigment were successful with 97.2% and 95.46% purity with the coefficient of correlation of 0.9961 and 0.9959 respectively. The β-carotene extract has presented strong activity on DPPH scavenging radicals with the percentage of inhibition at 99.45% in 0.008 mg/ml concentration as compared to lutein, which contributed 65.6% at 0.5mg/ml. As for antimicrobial activity, a positive result for both β-carotene and lutein pigment for bacterial and fungal species except for Tricho sp. In this study, the results from chromaticity stability of PLA-β-carotene and lutein coating from 1mg/ml up to 3mg/ml treated with different pH value from 3.0 to 11.0, as well as the time of exposure from day 1 until day 15 revealed that there is no stable relationship between pH, yellow colour concentration and period of time in response to light. Marked differences were observed for PLA-β-carotene coating treated with different concentration of NaCl for 1 and 2 mg/ml concentration of carotenoid pigment for a period of time of 10 days and PLA-lutein coating treated with different temperature from -25°C to 50°C when exposed for 6 hours. In term of light exposure, PLA-β-carotene coating with lower concentration and PLA-lutein with higher concentration were found to slow the degradation process. In conclusion, this data suggests that although different carotenoid pigment concentrations had influenced chromaticity stability, light and time also affected pigment colour difference.en_US
dc.description.callnumbert QK 898 C34 A295C 2019en_US
dc.description.degreelevelMasteren_US
dc.description.identifierThesis : Chromaticity, antioxidant, and antimicrobial activity of lutein and ?-carotene from local pumpkin and sweet potato /by Ainaa Eliah binti Abu Bakaren_US
dc.description.identityt11100408169AinaaEliahBintiAbuBakaren_US
dc.description.kulliyahInternational Institute for Halal Research and Trainingen_US
dc.description.notesThesis (MSHIS)--International Islamic University Malaysia, 2019en_US
dc.description.physicaldescriptionxvi, 125 leaves :colour illustrations ;30cm.en_US
dc.description.programmeInternational Institute for Halal Research & Trainingen_US
dc.identifier.urihttps://studentrepo.iium.edu.my/handle/123456789/8358
dc.identifier.urlhttps://lib.iium.edu.my/mom/services/mom/document/getFile/w15Ap0L1mow5v69aEPI0KsxQVnZ3WEfM20200630145910014
dc.language.isoenen_US
dc.publisherKuala Lumpur :International Institute for Halal Research and Training, International Islamic University Malaysia,2019en_US
dc.rightsCopyright International Islamic University Malaysia
dc.subject.lcshCarotenoidsen_US
dc.subject.lcshPlant pigments -- Analysisen_US
dc.subject.lcshSweet potatoes -- Researchen_US
dc.subject.lcshPumpkin -- Researchen_US
dc.titleChromaticity, antioxidant, and antimicrobial activity of lutein and β-carotene from local pumpkin and sweet potatoen_US
dc.typeMaster Thesisen_US
dspace.entity.typePublication
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#

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