scholarly journals Aromatization of virgin olive oil by seeds of Pimpinella anisum using three different methods: Physico-chemical change and thermal stability of flavored oils

Author(s):  
Youssef Moustakime ◽  
Zakaria Hazzoumi ◽  
Khalid Amrani Joutei
Food Research ◽  
2020 ◽  
Vol 4 (6) ◽  
pp. 1937-1946
Author(s):  
M.M.D.R. Tugay ◽  
L.E. Mopera ◽  
E.B. Esguerra ◽  
K.A.T. Castillo-Israel

This study aimed to characterize and compare pili (Canarium ovatum Engl.) pulp oil from two different varieties of pili fruits in Bicol, Philippines namely M. Orolfo and Orbase varieties for possible utilization into oil-based products. The effects of varietal differences in pili fruits on physical, chemical and quality characteristics of its pulp oil were determined. These two oils were also compared with control oils, commercially available coconut oil and extra virgin olive oil. Pili pulp oil from M. Orolfo had dark color while Orbase had color close to extra virgin olive oil. The two varieties did not significantly differ from each other in terms of refractive index, moisture and volatile matters, acid value, iodine value, saponification number and percent unsaponifiable matter but significantly differed from coconut oil and extra virgin olive oil. On the other hand, the two varieties significantly differed from each other in terms of peroxide value, Vitamin A and α-tocopherol contents. In terms of fatty acid profile, high amounts of palmitic acid were determined in both pili varieties (19-25%) compared with coconut oil (6.34%). Oleic acid in Orbase was 71.5% while M. Orolfo had 58.1%, which are comparable with extra virgin olive oil (77.9%). Pili pulp oils from M. Orolfo and Orbase can be utilized into oilbased products because its chemical and quality characteristics are within the standard. Both can be stored for a longer period of time and healthier in terms of fatty acid composition and natural antioxidant content.


2017 ◽  
Vol 864 ◽  
pp. 48-53
Author(s):  
Ahmad Fairoz Aziz ◽  
Khuzaimah Nazir ◽  
S.F. Ayub ◽  
N.I. Adam ◽  
Muhd Zu Azhan Yahya ◽  
...  

0.5 wt.% of N-(1,3-dimethylbutyl)-N’-phenyl-p-phenylenediamine (6PPD) was introduced into polymer electrolytes based on 30% poly(methyl-methacrylate) grafted natural rubber (MG30) in order to reduce the aging factor of MG30. The polymer electrolyte without 6PPD was used as control. All samples were prepared by using solution cast techniques. The effect of 6PPD in the electrolytes was analysed by using TGA, DSC and FTIR. TGA and DSC results revealed the thermal stability of MG30 electrolytes with 6PPD have higher thermal stability but lower glass transition temperature value. FTIR studies confirmed the existence of LiTF in the sample and prove the occurrence of polymer-salt complexation. Deconvolution techniques analysis on FTIR spectra shows the electrolyte sample with 6PPD display more ion dissociation which reflects to higher ionic conductivity.


2012 ◽  
Vol 727-728 ◽  
pp. 609-613
Author(s):  
P.C.F. Menezes ◽  
Taciana Regina de Gouveia Silva ◽  
Ana Cristina Figueiredo de Melo Costa ◽  
Edcleide Maria Araújo

The research in composites attempt to predict the physico-chemical and mechanical a given mixture of materials. In this work, a composite was produced using as the polyamide 6 matrix and how the burden of nickel ferrite was incorporated as powders calcined at 1200°C and concentration of 50 wt.%. This mixture was compacted in a hydraulic press with heating and characterized by XRD, SEM and TG. XRD results showed the characteristic peaks of polyamide 6 and ferrite. SEM results showed a good dispersion of nickel ferrite loading in the matrix, the presence of larger clusters and evenly distributed load for the composite calcined at 1200 ° C. TG curves showed that the addition of loading of calcined nickel ferrite promoted an increase in thermal stability of the composite compared to pure polyamide.


2014 ◽  
Vol 10 (9) ◽  
pp. 2744-2753 ◽  
Author(s):  
Fang Gao ◽  
Kay Lockyer ◽  
Karena Burkin ◽  
Dennis T Crane ◽  
Barbara Bolgiano

Author(s):  
Евгений Бурмистров ◽  
Evgeny Burmistrov ◽  
Ольга Бурмистрова ◽  
Olga Burmistrova ◽  
Наталья Леонидовна Наумова ◽  
...  

Abstract. Assortment falsification and low quality of expensive imported food products contribute to the development of mistrust on the part of consumers and, thereby, decrease their sales volumes, which impedes the expansion of sales markets and profit from sales. The aim of the research was to study the assortment and quality of olive oil sold on the commodity market. The studies used generally accepted test methods: marketing, organoleptic, physico-chemical, statistical. Results. It has been established that the assortment of olive oils is represented by 24 names of products: mainly unrefined by the production method, of Spanish origin, in green glass bottles of 0.5 l and 0.25 l, with a price range of 1 liter from 479.9 rubles. (trademark “Altera”) up to 1220 rubles. (trademark “Borges”). The labeling of the samples taken for testing of unrefined olive oil Extra Virgin Olive Oil of the “Borges” and “Sitia” brands and the refined Olive oil of the “Fillippo Berio” trademark was complete and complies with the requirements of current technical regulations. Consumer labeling of „Olivesco“ brand squeezed oil needs to be corrected in the name and composition of the products. The quality of consumer packaging, sensory and physico-chemical (relative density, refractive index, color number, acidity, acid and peroxide numbers) indicators were within the Russian and international standards. The best example of Extra Virgin Olive Oil can be considered “Sitia” brand products, which have confirmed their status of Protected Appellation of Origin (PDO). The scientific novelty of the research is to identify the quality of oils for compliance with the requirements of the international regulatory document – CODEX STAN 33-1981, REV.2-2003, developed by the Codex Alimentarius and adopted by the FAO / WHO International Commission.


OCL ◽  
2021 ◽  
Vol 28 ◽  
pp. 55
Author(s):  
Malika Douzane ◽  
Mohamed-Seghir Daas ◽  
Amel Meribai ◽  
Ahmed-Hani Guezil ◽  
Abdelkrim Abdi ◽  
...  

Olive cultivar diversity is rich in Algeria but most remain unexplored in terms of quality traits. This work aimed to evaluate the physicochemical and organoleptic quality of twenty olive oil samples belonging to four Algerian cultivars (Chemlal, Sigoise, Ronde de Miliana and Rougette de Mitidja) collected throughout the national territory. Physical-chemical and sensory results showed that 60% of the oils belong to the extra virgin category, while 40% were classified as “virgin olive oil”. The results of the principal component analysis (PCA) revealed a great variability in fatty acids composition between the samples depending on the cultivar and origin. Oleic acid was the most abundant and varied between 64.84 and 80.14%. Extra virgin olive oils with quality attributes are eligible for a label. Rougette de Mitidja, Ronde de Miliana and Sigoise from Oran showed great potential.


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