Analysis of Rice Bran Oil Adulterated with other Edible Oils by GC

Since rice bran oil (RBO) is well-known by consumer and more expensive than other oils, some RBO is adulterated with other cheap oils, such as cottonseed oil (CO), palm oil (PO), sunflower oil (SFO) and soybean oil (SO). The types and content of FAs in RBO changes great after adulterated, this will seriously affect the quality of the rice and the people health. In this study, GC was used to detect the change of fatty acids (FAs) after adulterated with those inferior oils. The analysis will provide a reference for the RBO adulteration problem.

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Small Dense Low-Density Lipoprotein Concentration and Oxidative Susceptibility Changes after Consumption of Soybean Oil, Rice Bran Oil, Palm Oil and Mixed Rice Bran/Palm Oil in Hypercholesterolaemic Women

Journal of International Medical Research ◽

10.1177/147323000903700111 ◽

2009 ◽

Vol 37 (1) ◽

pp. 96-104 ◽

Cited By ~ 19

Author(s):

T Utarwuthipong ◽

S Komindr ◽

V Pakpeankitvatana ◽

S Songchitsomboon ◽

N Thongmuang

Keyword(s):

Soybean Oil ◽

Rice Bran ◽

Palm Oil ◽

Oil Palm ◽

Rice Bran Oil ◽

Low Density Lipoprotein ◽

Density Lipoprotein ◽

Low Density ◽

Oxidative Susceptibility ◽

Lipoprotein Concentration

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Studies on the Fatty Acid Composition of Edible Oil

Bangladesh Journal of Scientific and Industrial Research ◽

10.3329/bjsir.v42i3.669 ◽

1970 ◽

Vol 42 (3) ◽

pp. 311-316 ◽

Cited By ~ 35

Author(s):

K Chowdhury ◽

LA Banu ◽

S Khan ◽

A Latif

Keyword(s):

Fatty Acids ◽

Fatty Acid ◽

Polyunsaturated Fatty Acids ◽

Soybean Oil ◽

Palm Oil ◽

Sunflower Oil ◽

Packed Column ◽

Coconut Oil ◽

Edible Oil ◽

Mustard Oil

Fatty acid analysis of the five types of locally consumed edible oils (n = 22) was carried out using a Gas Chromatograph (G.C) equipped with a Flame Ionization Detector (FID) and stainless steel packed column. The results showed that sunflower oil contained the highest percentage of long chain mono and polyunsaturated fatty acids (91.49 ± 1.91 %) compared to soybean oil (81.14 ± 1.49 %), mustard oil (86.80 ± 3.07 %), palm oil (53.30 ± 0.36 %) and coconut oil (7.12 ± 0.51 %). Two varieties of mustard oil, low erucic (= 5 %, n=3) and high erucic acid ( >14 %, n=2) and two varieties of sunflower oil, high linoleic-low oleic (61-66 % & 22-27 %, n=2) and low linoleic- high oleic (29-38 % and 53-63 %, n =3) were found. Sunflower oil with the highest percentage of mono and polyunsaturated fatty acids especially the high linoleic- low oleic variety appeared to be superior and most suitable edible oil for mass consumption. Key words: Fatty acid, Gas chomatograph, Sunflower oil, Soybean oil, Mustard oil, Palm oil, Coconut oil. Bangladesh J. Sci. Ind. Res. 42(3), 311-316, 2007

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Quality and vitamin A status assessment of different commercial edible oil

Bangladesh Journal of Scientific and Industrial Research ◽

10.3329/bjsir.v54i1.40726 ◽

2019 ◽

Vol 54 (1) ◽

pp. 11-20

Author(s):

SA Lisa ◽

S Khan ◽

MA Kabir ◽

F Islam ◽

S Mohajan ◽

...

Keyword(s):

Fatty Acids ◽

Fatty Acid ◽

Vitamin A ◽

Rice Bran ◽

Palm Olein ◽

Edible Oils ◽

Rice Bran Oil ◽

Saturated Fatty Acids ◽

Mustard Oil ◽

Mustard Oils

The present study was done to evaluate the quality and the vitamin A fortification status of 5 types of commercial edible oils sold in Dhaka city markets. The percentages of free fatty acid (FFA), peroxide value (POV), iodine value (IV) and fatty acid composition were estimated to evaluate the quality and vitamin A content were determined to evaluate the vitamin A fortification status of 25 commercial edible oils- soybean oil, sunflower oil, rice bran oil, mustard oil and palm olein (5 brands of each) . The results revealed that FFA, POV and IV of the commercial oils analyzed were within the BSTI standard limits. The highest saturated fatty acids (SFA) values ranging from 39.85 ± 0.005 to 46.97 ± 0.002 % was found in palm olein samples and the lowest SFA values ranging from 4.56 ± 0.031 to 6.97 ± 0.096 % was found in mustard oils. On the other hand, mustard oils contained highest monounsaturated fatty acids (MUFA) ranging from 69.30 ± 0.189 to 75.87 ± 0.069 % compared to other oils analyzed. Highest polyunsaturated fatty acids (PUFA) were recorded in sunflower oils 64.78 ± 0.035% followed by soybean oils 63.25 ± 0.245%. In addition, except sunflower and mustard oils, vitamin A was found in all the soybean and rice bran oils analyzed. On the contrary, vitamin A was found only in 60% of the palm olein samples analyzed and the content was much lower than the standard value (15-30 ppm). Bangladesh J. Sci. Ind. Res.54(1), 11-20, 2019

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The effect of ethoxylate nonionic surfactants on phase inversion temperature and salinity: an alternative approach for vegetable oil recovery from spent bleaching earth

MATEC Web of Conferences ◽

10.1051/matecconf/201819203042 ◽

2018 ◽

Vol 192 ◽

pp. 03042

Author(s):

Gitsada Panumonwatee ◽

Ampira Charoensaeng ◽

Noulkamol Arpornpong

Keyword(s):

Soybean Oil ◽

Vegetable Oils ◽

Rice Bran ◽

Palm Oil ◽

Phase Inversion ◽

Nonionic Surfactants ◽

Rice Bran Oil ◽

Bleaching Earth ◽

Crude Palm Oil ◽

Optimum Salinity

An accurate determination of the hydrophilic-lipophilic nature of surfactants plays an important role in guiding microemulsion formation. The objective of this study is to determine the effect of ethoxylate numbers (EONs) (3, 5, and 7 moles) of nonionic surfactants on a phase inversion temperature (PIT) and optimum salinity based on the equivalent alkane carbon numbers (ACNs) of vegetable oils. Three vegetable oils, soybean oil, crude rice bran oil and crude palm oil, were selected for use as a surrogate oil to represent the residual oils found in spent bleaching earth. In this study, the hydrophilic-lipophilic deviation (HLD) was used to predict the optimum salinity (0-20 %wt.) at various temperatures (25-55°C). The results showed that the ACNs of crude rice bran oil, crude palm oil, and soybean oil were 15.41±0.35, 13.71±0.41, and 17.60±0.28, respectively. In comparison, these predictions with the experimental results, the data showed slight deviations in the optimum salinity with the specific temperature. Finally, the ACN and the surfactant characteristics obtained in this study were combined with the HLD equation and used to validate its practically and utility for guiding the optimum microemulsion formulation.

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Determination of Multiple Mycotoxins and Their Natural Occurrence in Edible Vegetable Oils Using Liquid Chromatography–Tandem Mass Spectrometry

Foods ◽

10.3390/foods10112795 ◽

2021 ◽

Vol 10 (11) ◽

pp. 2795

Author(s):

Thammaporn Junsai ◽

Saranya Poapolathep ◽

Samak Sutjarit ◽

Mario Giorgi ◽

Zhaowei Zhang ◽

...

Keyword(s):

Olive Oil ◽

Vegetable Oil ◽

Vegetable Oils ◽

Rice Bran ◽

Palm Oil ◽

Sunflower Oil ◽

Corn Oil ◽

Rice Bran Oil ◽

Natural Occurrence ◽

Ionization Source

The prevalence of mycotoxins is often increased by the climatic conditions prevailing in tropical regions. Reports have revealed the contamination of mycotoxins in some types of vegetable oil. However, vegetable oil is one of the essential ingredients used in food preparation. Thus, this study determined the occurrence of multi-mycotoxins in six types of vegetable oils commercially available in Thailand to assess the consumer health risk. In total, 300 vegetable oil samples (olive oil, palm oil, soybean oil, corn oil, sunflower oil, and rice bran oil) collected from various markets in Thailand were analyzed for the presence of nine mycotoxins, namely, aflatoxin B1 (AFB1), aflatoxin B2 (AFB2), aflatoxin G1 (AFG1), aflatoxin G2 (AFG2), beauvericin (BEA), ochratoxin A (OTA), zearalenone (ZEA), fumonisin B1 (FB1), and fumonisin B2 (FB2) using a quick, easy, cheap, effective, rugged, and safe (QuEChERS)-based procedure and a triple quadrupole mass spectrometer equipped with an electrospray ionization source. The incidences of mycotoxin contamination varied among the different types of oil samples. AFB1, AFB2, ZEA, FB1, and FB2 were most frequently found in contaminated samples. AFB2, BEA, ZEA, FB1, and FB2 contaminated olive oil samples, whereas AFB1, AFB2, AFG2, and OTA contaminated palm oil samples. AFB1, AFB2, and ZEA were found in soybean oils, whereas ZEA, FB1, and FB2 contaminated corn oil samples. AFB1 and AFG1 contaminated sunflower oil samples, whereas AFB1, AFB2, AFG1, and OTA were detected in rice bran oil samples. However, the contamination levels of the analyzed mycotoxins were below the regulatory limits.

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