Malaysian Journal of Analytical Sciences最新文献_第8页

ENZYMATIC HYDROLYSIS OF OIL PALM EMPTY FRUIT BUNCH AND ITS KINETICS 油棕果穗的酶解及其动力学

Malaysian Journal of Analytical Sciences Pub Date : 2018-08-16 DOI: 10.17576/mjas-2018-2204-18

引用次数: 5

SYNERGISTIC EXTRACTANT FOR EXTRACTION OF REMAZOL ORANGE 3R IN LIQUID MEMBRANE FORMULATION 液膜制剂中利马唑橙3r的协同萃取剂

Malaysian Journal of Analytical Sciences Pub Date : 2018-08-16 DOI: 10.17576/mjas-2018-2204-08

H. A. Rahman, N. Othman, M. B. Rosly, R. Sulaiman, N. Jusoh, N. M. Noah

{"title":"SYNERGISTIC EXTRACTANT FOR EXTRACTION OF REMAZOL ORANGE 3R IN LIQUID MEMBRANE FORMULATION","authors":"H. A. Rahman, N. Othman, M. B. Rosly, R. Sulaiman, N. Jusoh, N. M. Noah","doi":"10.17576/mjas-2018-2204-08","DOIUrl":"https://doi.org/10.17576/mjas-2018-2204-08","url":null,"abstract":"Currently, various synthetic dyes are used in the textile industry and a lot of non-bonded dyes are released into the wastewater; increasing its toxicity and carcinogenicity. Liquid membrane process is one of the potential methods to eliminate these unwanted particles from the wastewater. The most crucial part of the liquid membrane process is its formulation; especially the extractant or carrier. In order to find a suitable extractant, liquid-liquid extraction process was carried out. The effect of synergistic extractant to extract the Remazol Orange 3R reactive dyes in a shorter time and at a lower concentration of extractant was investigated in this study. Several parameters have been studied such as extractant type, extractant concentration, synergist extractant type and synergist extractant concentration. The results show that, Remazol Orange 3R reactive dyes were extracted by tridodecylamine (TDA) as a base and trioctylamine (TOA) as a synergist extractant. Meanwhile, the salicyclic acid (SA) was used to protonate the TDA and TOA, and cooking palm oil was used as a diluent. The performance of extraction of reactive dyes at the 0.1 M concentration of extractant was 70% when synergistic system was applied compared to single extractant which was only 50% of the dyes have been extracted. Therefore, the synergistic extractant has a potential to be further utilised in liquid membrane studies on the extraction of reactive dyes.","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44696234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

TOTAL PHENOLIC, FLAVONOID CONTENT AND ANTIOXIDANT ACTIVITY OF Clinacanthus nutans LEAVES BY WATER-BASED ULTRASONIC ASSISTED EXTRACTION 水基超声辅助提取槟榔叶总酚、类黄酮含量及抗氧化活性

Malaysian Journal of Analytical Sciences Pub Date : 2018-08-16 DOI: 10.17576/mjas-2018-2204-12

N. A. Baharuddin, M. Nordin, N. Morad, N. Aris, M. Yunus

{"title":"TOTAL PHENOLIC, FLAVONOID CONTENT AND ANTIOXIDANT ACTIVITY OF Clinacanthus nutans LEAVES BY WATER-BASED ULTRASONIC ASSISTED EXTRACTION","authors":"N. A. Baharuddin, M. Nordin, N. Morad, N. Aris, M. Yunus","doi":"10.17576/mjas-2018-2204-12","DOIUrl":"https://doi.org/10.17576/mjas-2018-2204-12","url":null,"abstract":"Clinacanthus nutans (C. nutans) is a prominent herb species that widely cultivated in Southeast Asia region. The effect of waterbased ultrasonic assisted extraction at various temperature (30 to 60 °C) and time (5 to 30 minutes) on the total phenolic, flavonoid content and antioxidant activity in C. nutans leaves extract was investigated. Acquired extract was quantified for its total phenolic, flavonoid content and antioxidant activity by Folin-Ciocalteu, aluminium chloride test and 2, 2-diphenyl-1picrylhydrazyl (DPPH) assay, respectively. The result has revealed that the highest temperature led to the degradation of bioactive compound in C. nutans leaves. The highest phenolic content and antioxidant activity achieved at 55 °C and 25 minutes with 13.87 ± 0.15 mg gallic acid g dry sample and 52.88 ± 3.91% inhibition, respectively. Meanwhile, greatest flavonoid content was obtained for 12.25 ± 1.01 mg quercetin g of dry sample at 55 °C and 15 minutes of extraction. From this study, it was shown that C. nutans extraction has gained benefit from ultrasonic assisted extraction and has possibilities of being used for the herbs utilisation of beneficial food materials, nutraceuticals and pharmaceuticals at manufacturing industry.","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48445967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

OLEIC ACID ENHANCEMENT IN USED FRYING PALM OIL VIA ENZYMATIC ACIDOLYSIS 用酶解法提高煎炸用棕榈油中的油酸含量

Malaysian Journal of Analytical Sciences Pub Date : 2018-08-16 DOI: 10.17576/mjas-2018-2204-09

Athirah Zaharudin, Nurul Syafiqah binti Remzi, Roslina Rashid, S. M. M. Esivan, A. Idris, N. Othman

{"title":"OLEIC ACID ENHANCEMENT IN USED FRYING PALM OIL VIA ENZYMATIC ACIDOLYSIS","authors":"Athirah Zaharudin, Nurul Syafiqah binti Remzi, Roslina Rashid, S. M. M. Esivan, A. Idris, N. Othman","doi":"10.17576/mjas-2018-2204-09","DOIUrl":"https://doi.org/10.17576/mjas-2018-2204-09","url":null,"abstract":"The extensive amount of used frying palm oil (UFO) generated in Malaysia has caused serious environmental problems. Management of the waste faces a significant challenge especially on choosing the appropriate method by considering the possibilities of contaminating the environment. This study aims to add value to UFO by producing high oleic palm oil. Enzymatic acidolysis using lipase was employed to incorporate oleic acid in the UFO. This study also investigated the effect of enzymatic loading, reaction time and water content on the properties of modified UFO as to find the optimum condition for oleic acid incorporation. Oleic acid incorporation was quantified based on peroxide and iodine values. The optimum conditions for acidolysis process were obtained at enzyme loading of 30% (w/w), reaction time of 24 hours, and water content of 2% (w/w) with substrate mole ratio of 1:2 (UFO: oleic acid) and temperature of 50 °C. At optimum conditions, the modified used frying palm oil (MUFO) has peroxide and iodine values of 19.00 ± 0.99 meq/mg and 31.5 ± 0.42 mg/mg, respectively. After the acidolysis reaction, oleic acid concentration has increased from 27.00 ± 0.70% (v/v) to 62.34 ± 1.29% (v/v), demonstrating their feasibility as a substrate for structured lipid production.","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48045366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

PHYSICOCHEMICAL PROPERTIES OF ENCAPSULATED PURPLE SWEET POTATO EXTRACT; EFFECT OF MALTODEXTRIN CONCENTRATION, AND MICROWAVE DRYING POWER 紫甘薯提取物的理化性质；麦芽糊精浓度和微波干燥功率的影响

Malaysian Journal of Analytical Sciences Pub Date : 2018-08-16 DOI: 10.17576/mjas-2018-2204-06

引用次数: 4

TETRABUTYLPHOSPHONIUM TRIFLUOROACETATE ([P4444]CF3COO) THERMORESPONSIVE IONIC LIQUID AS A DRAW SOLUTION FOR FORWARD OSMOSIS PROCESS 三氟乙酸四丁基磷([p4444] cf3coo)热敏离子液体作为正向渗透过程的引出液

Malaysian Journal of Analytical Sciences Pub Date : 2018-08-16 DOI: 10.17576/mjas-2018-2204-05

Tuan Chik Syed Mohd Saufi, Abdullah Syamsul, Abu Seman Mazrul Nizam, Mohd Taib Malyanah

{"title":"TETRABUTYLPHOSPHONIUM TRIFLUOROACETATE ([P4444]CF3COO) THERMORESPONSIVE IONIC LIQUID AS A DRAW SOLUTION FOR FORWARD OSMOSIS PROCESS","authors":"Tuan Chik Syed Mohd Saufi, Abdullah Syamsul, Abu Seman Mazrul Nizam, Mohd Taib Malyanah","doi":"10.17576/mjas-2018-2204-05","DOIUrl":"https://doi.org/10.17576/mjas-2018-2204-05","url":null,"abstract":"Forward osmosis (FO) is recognized as a potential membrane technology that utilizes low energy for water desalination. It is driven by natural osmotic pressure difference between draw solution and feed solution across semipermeable membrane. Pure water will permeated from the salinity feed water to the draw solution side. In order to produce pure water, it is necessary to find the best draw solute that exhibits high draw ability and can separate the permeated water efficiently from the draw solution. In the current study, lower critical solution temperature (LCST) thermos-responsive ionic liquid (IL) of tetrabutylphosphonium trifluoroacetate ([P4444]CF3COO) was synthesized as the draw solution for FO process. [P4444]CF3COO) is dissolved in water below it critical temperature of 29°C and becoming two layer above this critical temperature. [P4444]CF3COO IL showed high water flux of 0.44 ± 0.007 LMH compared to the water flux of 0.32 ± 0.049 LMH for the sodium chloride (NaCl) draw solution at the same draw solution concentration. Applying thermo-responsive IL as draw solute in FO process has the potential to treat high salinity of feed stream with eases water recovery and draw solute regeneration.","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42994300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

ADSORBENTS FROM THE BY-PRODUCT OF PALM OIL REFINERY FOR METHYLENE BLUE REMOVAL 棕榈油精炼厂副产物中去除亚甲基蓝的吸附剂

Malaysian Journal of Analytical Sciences Pub Date : 2018-08-16 DOI: 10.17576/mjas-2018-2204-10

引用次数: 1

CHEMICAL CHARACTERIZATION OF Berberis vulgaris L. var. asperma EDIBLE BERRIES 小檗食用浆果的化学特性研究

Malaysian Journal of Analytical Sciences Pub Date : 2018-08-16 DOI: 10.17576/mjas-2018-2204-02

引用次数: 3

PRODUCTION OF VOLATILE ORGANIC COMPOUNDS USING OIL PALM FROND JUICE AS A SOLE SUBSTRATE BY Ceratocystis fimbriata 以油棕汁为基质，利用Ceratocystis fimbriata生产挥发性有机化合物

Malaysian Journal of Analytical Sciences Pub Date : 2018-08-16 DOI: 10.17576/mjas-2018-2204-15

引用次数: 2

EXTRACTION OF EICOSAPENTAENOIC ACID FROM Nannochloropsis gaditana USING SUB-CRITICAL WATER EXTRACTION 亚临界水萃取法提取纳米绿藻中的二十碳五烯酸

Malaysian Journal of Analytical Sciences Pub Date : 2018-08-16 DOI: 10.17576/mjas-2018-2204-07

引用次数: 4