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Quantification of the adulteration concentration of palm kernel oil in virgin coconut oil using near-infrared hyperspectral imaging

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Journal of Integrative Agriculture 2024年第1期23卷 298-309页

作者： Phiraiwan Jermwongruttanachai Siwalak Pathaveerat Sirinad Noypitak Department of Agricultural Engineering Faculty of Engineering at Kamphaeng SaenKasetsart UniversityKamphaeng Saen CampusNakhon Pathom 73140Thailand

The adulteration concentration of palm kernel oil(PKO)in virgin coconut oil(VCO)was quantified using near-infrared(NIR)hyperspectral ***,some VCO is adulterated with lower-priced PKO to reduce production costs,which diminishes the quality of the *** study used NIR hyperspectral imaging in the wavelength region 900-1,650 nm to create a quantitative model for the detection of PKO contaminants(0-100%)in VCO and to develop predictive *** prediction equation for the adulteration of VCO with PKO was constructed using the partial least squares regression *** best predictive model was pre-processed using the standard normal variate method,and the coefficient of determination of prediction was 0.991,the root mean square error of prediction was 2.93%,and the residual prediction deviation was *** results showed that this model could be applied for quantifying the adulteration concentration of PKO in *** prediction adulteration concentration mapping of VCO with PKO was created from a calibration model that showed the color level according to the adulteration concentration in the range of 0-100%.NIR hyperspectral imaging could be clearly used to quantify the adulteration of VCO with a color level map that provides a quick,accurate,and non-destructive detection method.

关键词： virgin coconut oil adulteration contamination palm kernel oil hyperspectral imaging

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Antiphotooxidative Effect of Ascorbic Acid Microemulsion in virgin coconut oil

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Journal of Food Science and Engineering 2012年第4期2卷 206-212页

作者： Ambar Rukmini Sri Raharjo Pudji Hastuti Supriyadi Department of Food Technology and Nutrition Faculty of Agricultural Technology Widya Mataram University Yogyakarta55132 Indonesia Department of Food and Agricultural Product Technology Faculty of Agricultural Technology Gadjah Mada UniversityYogyakarta 55281 Indonesia

This study was intended to determine the effectiveness of ascorbic acid microemulsion for inhibiting photooxidation of virgin coconut oil （VCO）. The ascorbic acid microemulsion was prepared by mixing ascorbic acid, deionized water, surfactant mixture, and VCO as continuous phase. Ascorbic acid microemulsion at 50, 100, 150, 200, or 250 ppm was dispersed into VCO. The same level of ascorbyl palmitate, TBHQ （tertiary butylhydroquinone）, and BHA （butylated hidroxyanisole） were added into VCO and used for comparison. All of these samples were subsequently subjected to photooxidation under fluorescent light exposure （4,000 lux） for up to 8 hours at room temperature （30 ~ 1 ~C）. Peroxide values and p-anisidine values of photooxidized samples were measured at 1 hour interval. The result indicated that at the level of 250 ppm, ascorbic acid which was included into the microemulsion system effectively inhibited photooxidation of VCO in comparison with the other antioxidants. This study confirmed that a highly hydrophilic singlet oxygen quencher （SOQ） such as ascorbic acid can be successfully incorporated into the microemulsion system and the addition of ascorbic acid microemulsion effectively inhibited photooxidation of VCO during storage under fluorescent light.

关键词： Ascorbic acid microemulsion photooxidation virgin coconut oil singlet oxygen quencher.

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Piezoelectric Quartz Crystal Sensors for the Quality Assessment of virgin coconut oil:Towards Electronic Nose

Piezoelectric Quartz Crystal Sensors for the Quality Assessm...

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13th Asian Chemical Congress

作者： ONGO,Emeldaa SEVILLA,Fortunato lIndustrial Technology Development Institute DOSTBicutanTaguig Univeristy of Santo Tomas Graduate SchoolEspana Blvd.City of ManilaPhilippines

＜正＞The quality assessment of virgin coconut oil is important in view of its increasing popularity and great potential in the international *** this study,a novel approach that could elucidate the distinct quality characteristics of virgin coconut oil was *** electronic nose based on polymer-coated piezoelectric quartz crystal was assembled to discriminate different quality of coconut

关键词： Electronic nose Piezoelectric quartz crystal virgin coconut oil Refined bleached and deodorized coconut oil

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Long-term consumption of virgin coconut (Cocos nucifera) oil diet impairs learning and memory in CD1 mice

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Chinese Herbal Medicines 2020年第4期12卷 414-420页

作者： Sunday A.Bisong Clement O.Nku Olushola A.Sanya Sunday O.Ita Victor A.Fischer Favour E.Abuo Department of Physiology College of Medical SciencesUniversity of CalabarCalabar 540242Nigeria Department of Physiology University of UyoUyo 520232Nigeria Department of Anatomy University of CalabarCalabar 540242Nigeria Department of Physiology Federal UniversityNdufu-Alike IkwoEbonyi State 482131Nigeria

Objective:virgin coconut oil(VCO)has been used in the management of dementia in Alzheimer’s disease(AD).Therefore,this research investigated the effect of long-term consumption of VCO diet on learning and memory in CD1 ***:Thirty male CD1 mice(divided into three groups,n=10)were fed with standard rodent chow(control),5%and 20%VCO diets(respectively)for 28 *** Morris Water Maze(MWM)test was used to test the effect of VCO on visuo-spatial learning and memory,while the Novel Object Recognition Test(NORT)was used to measure short-and long-term recognition ***:Learning performance of mice did not differ in the *** the probe trial,duration in the retention quadrant and annulus crossings were lower(P0.05).The discrimination index was also lower in the 20%VCO group compared to control and 5%VCO diet groups indicating impaired long-term cognitive memory in mice given 20%VCO *** examination of brains showed damage within the CA1 pyramidal cell layer of the hippocampus in the 20%VCO diet group,in line with the behavioural ***:Long-term consumption of virgin coconut oil diet impairs memory in mice.

关键词： Cocos nucifera Linn learning and memory mice virgin coconut oil

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The Use of Single-Phase Immersion Cooling by Using Two Types of Dielectric Fluid for Data Center Energy Savings

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Energy Engineering 2022年第1期119卷 275-286页

作者： Nugroho Agung Pambudi Awibi Muhamad Yusuf Alfan Sarifudin Energy and Society Laboratory Mechanical Engineering EducationUniversitas Sebelas MaretSurakarta57126Indonesia

Data centers are recognized as one of the most important aspects of the fourth industrial revolution since conventional data centers are inefficient and have dependency on high energy consumption,in which the cooling is responsible for 40%of the ***,this research proposes the immersion cooling method to solving the high energy consumption of data centers by cooling its component using two types of dielectric *** stages of experimentalmethods are used,such as fluid types,cooling effectiveness,optimization,and ***,benchmark software is used to measure the CPU maximum work with the temperature data performed for 24 *** results of this study show that the immersion cooling reduces 13℃ lower temperature than the conventional cooling method which means it saves more energy consumption in the data *** most optimum variable used to decrease the temperature is 1.5 lpm of flow rate and 800 rpm of fan ***,the cooling performance of the dielectric fluids shows that the mineral oil(MO)is better than the virgin coconut oil(VCO).In durability experiment,there are no components damage after five months immersed in the fluid.

关键词： Single-phase immersion cooling data center dielectric fluid mineral oil virgin coconut oil

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