Stability During Frying of Moringa oleifera Seed Oil Variety “Periyakulam 1” (original) (raw)
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Food Chemistry, 2007
The performance of the high-oleic Moringa oleifera seed oil (MoO) in deep-frying was evaluated by comparing its frying stability with other conventional frying oils [canola (CLO), soybean (SBO), and palm olein (PO)]. The oils were used as a frying media to fry potato chips for 6 h a day up to a maximum of 5 days. Standard methods for the determination of used frying oil deterioration such as changes in color, viscosity, free fatty acids (FFA), peroxide value (PV), p-anisidine value (p-AV), iodine value (IV), specific extinction ðE p p % cm 233 and 269 nm) and total polar compounds (TPC) were used to evaluate the oils. At the end of the frying period, the change in percent FFA from the initial to final day of frying were as follows SBO (60.0%), PSO (65.0%), MoO (66.6%) and CLO (71.4%) and the change in p-AV and TOTOX value of MoO were found to be significantly lower (P < 0.05) than the rest of the oils tested, followed by PO, with the highest values obtained in CLO and SBO. The levels of conjugated dienes and trienes ðE p p % cm at 233 and 269 nm) throughout the frying period were lowest in MoO and PO followed CLO, with highest levels found in SBO. The rate of darkening and increase in viscosity were proportional to the frying time for all the oils. PO darkened earlier followed by CLO. At the end of frying period, TPC was significantly (P < 0.05) lower in MoO (20.78%) and PSO (21.23%), as compared to CLO (28.73%) and SBO (31.82%).
Frying Stability of Moringa stenopetala Seed Oil
Plant Foods for Human Nutrition, 2006
The frying performance of Moringa stenopetala seed oil (extracted with cold press or n-hexane) was studied especially as regards repeated frying operations. The oils were used for intermittent frying of potato slices and cod filets at a temperature of 175 • C for 5 consecutive days (5 fryings per day). The chemical changes occurring in oils were evaluated. Free fatty acid content, polar compounds, colour and viscosity of the oils all increased, whereas the iodine value, smoke point, polyunsaturated fatty acid content, induction period and tocopherol content decreased. The effect of the oil on the organoleptic quality of these fried foods and the theoretical number of frying operations possible before having to discard the oil was also determined. The analytical and sensory data showed that the lowest deterioration occurred in cold press produced oil.
Assessment of potentials of Moringa oleifera seed oil in enhancing the frying quality of soybean oil
Open Agriculture
This study investigated the effects of mixing Moringa oleifera seed oil with soybean (Glycine max) seed oil in enhancing the physical and chemical properties of soybean oil during repetitive frying. Different blends (100:0, 50:50, and 70:30) of soybean and M. oleifera seed oils were formulated, while soybean oil served as control. All these oil samples were used for frying potato (Ipomoea batatas) slices. The quality of the fried oil samples was evaluated by determining the smoke point, refractive index (RI), viscosity, colour, peroxide value, iodine value, and free fatty acid (FFA). The range of values obtained were smoke point (158.7–172.3°C), RI (1.46–1.49°C), colour (6.0–9.42), viscosity (0.41–2.13 mm2/s), peroxide value (0.93–5.16 meq/kg), iodine value (87.16–64.71 mg/100 g), and FFA (0.3–1.95%), for different blends of soybean and M. oleifera seed oils and control. In terms of changes in the chemical and physical properties, during frying, soybean/M. oleifera seed oil mix of 7...
Change in physicochemical properties of edible oil during frying: A review
2017
Edible oils from plant, animal, or synthetic origin, are used in frying, baking, and other forms of cooking, and in salad dressings and bread dips. Plant-derived edible oils consist of carboxylic acids with long hydrocarbon chains, in contrast to petroleum-based oils which lack the carboxyl group on the end. The carboxyl group makes the oils edible, providing a site for human enzymes to attack and break down the chain in a process called beta-oxidation. There are a wide variety of cooking oils from plant sources such as olive oil, palm oil, soybean oil, canola oil (rapeseed oil), corn oil, peanut oil and other vegetable oils, as well as animal-based oils like butter and lard. This paper incorporates a comparative study of different types of frying oils by their physicochemical properties and compositional qualities. There are numerous health benefits of frying oils which has been covered in the paper along with the future of edible oils in India.
Stability of Moringa Seed Oil Compared To Some Vegetable Oils
2013
This study was conducted to see general characteristic and stability of moringa seed oil in comparison with oils of groundnut, sunflower and cottonseeds in frequent frying process. Moringa seed oil was purchased from Omdurman local Market. Refractive index, density viscosity, colour red, yellow and blue and oil content which were 1.4640, 0.9190, 20.22, cp 5.00, 1.30, 0.00 and38.6% receptively. The chemical properties of moringa seed oil showed peroxide value 2.79 meqO2/kg , free fatty acids 1.40% and fatty acid composition exhibited oleic, linoleic, stearic, behenic and palmatic acids (45.09 , 42.43 , 8.38 , 1.77 , 0.52%) respectively. There were significant difference (p ≤ 0.05 )among refractive index , density , viscosity colour of moringa seed oil when they compared to sunflower seed , cottonseed , and groundnut oils before frying and after frying periods . Also there were significant difference in chemical properties among peroxide value and free fatty acids of moringa seed oil ...
Asian Journal of Applied Chemistry Research, 2019
Aims: To investigate the effects of continuous deep fat frying of white (Irish) potatoes on the physical and chemical attributes of ten brands of edible cooking oils: Fortune Butto, Roki, Tamu, Best Fry, Mukwano, Golden Fry (hard oils); Sunseed, Sunny, Sunvita and Sunlite (soft oils) sold in Kampala, Uganda. Place and Duration of the Study: Oil samples of approximate manufacturing dates were obtained from Mega Standard supermarket in Greater Metropolitan Kampala, Uganda. Oil samples were also obtained from local Irish potato fryers in Makindye division of Kampala during ten deep frying cycles. Irish potatoes was procured from Nakasero market, Kampala. Physicochemical analyses were performed at the Quality Control Laboratory of Mukwano Industries Limited, Kampala Industrial area, Kampala. The research was conducted between May 2018 to December 2018. Methodology: 400g of Irish potato slices (1cm × 1cm × 3cm) were submersed in 1500mL of oil maintained at 140°C for 6 minutes in an Electric Deep Fryer with a frying time of 10 minutes.The color value (CV) and the acidification of the oils as free fatty acid (FFA), peroxide value (POV), paraanisidine value (AnV), iodine adsorption value (IV) and total oxidation (TOTOX) value before and between ten successive frying cycles were determined using ISO and AOCS official methods.The maximum number of reuses of an oil was estimated from the frying round before its POV or AnV surpassed the maximum permissible statutory or Codex Alimentarius limit for edible oils. Results: For fresh oils, the statistical physicochemical parameter ranges were: CV (0.4R 3.4Y- 7.7R 70Y), FFA (0.0430±0.30-0.1508±0.30), POV (0.5951±0.03-6.6134±0.23 meqO2/Kg), AnV (0.90±0.01-4.30±0.19) and IV (57.62±0.17-128.35±0.02gI2/100g). By the 10th fry, the ranges were CV (3.0R 23Y-20.4R 70Y), FFA (0.2286±0.01-0.4817±0.01), POV (11.1138±0.01- 15.7525±0.01meqO2/Kg), AnV (10.31±0.03-22.16±0.01) and IV (53.66±0.01-126.03±0.02gI2/100g). Considering oxidizability as TOTOX values, frying stability of the selected brands of cooking oils during the frying cycles followed the order: Roki > Fortune Butto > Sunvita > Sunny > Sunlite > Mukwano > Tamu > Best Fry > Golden Fry > Sunseed. Conclusion: Reuse of the oils for continuous frying of Irish potatoes on the same day can be done only up to 7 times on average for hard oils and 6 times for soft oils with the oils still regarded as safe for human consumption. Hard oils should be preferred to soft oils for deep frying of Irish potato chips.Further research should elucidate the variation of physicochemical properties of other oil brands on the Ugandan market such as Nile, Fortune, Kimbo, Star Fry, Cow boy and Ufuta and should use other food samples such as fish, cassava, chicken, sweet plantain, dough, meat and edible grasshoppers.
Quality Changes of Common Edible Frying Oils during Frying of Traditional Foods
Asian Food Science Journal
This study aimed to examine the impact of the frying process on the physical and chemical properties of widely consumed edible oils. Soybean, palm, and mustard oils, as well as raw dulpuri and singara products, were procured from the nearby marketplace. The oils underwent five consecutive frying cycles at temperatures exceeding 160°C and were subjected to five hours of heating. Analyses including determination of free fatty acid (FFA), peroxide value (PV), saponification value (SV), iodine value (IV), and optical density (OD) at a wavelength of 425 nm were performed. Following multiple rounds of frying and heating, the levels of FFA, PV, and oxidative stability index exhibited an increase, whereas the IV demonstrated a decrease across all three types of oils. The OD of soybean and palm oils exhibited an upward trend, whereas that of mustard oil initially displayed a decline, followed by a gradual ascent. In comparison to soybean and mustard oils, palm oil exhibited the most notewort...
Quality characteristics and stability of Moringa oleifera seed oil of Indian origin
Journal of Food Science and Technology, 2011
Moringa oil has the potential to be utilized as an additional source of edible oil. Nutritional importance of moringa oil as the capability to be in addition with olive oil in the Indian market, which is being imported. Due to its physico-chemical properties it can be used as an edible oil. The present research was designed to extract and determine cold press moringa oil sensory properties. Moringa oil was extracted by traditional method of cold press. According to literature moringa oil, a high mono unsaturated fatty acid (oleic acid) oil which resembles olive oil in properties was compared with olive oil. Acceptance of moringa oil was compared with olive oil by sensory evaluation of roasted potato and French fry recipes. The scores obtained were subjected to student's t test and significant difference of moringa oil compared with olive oil.
Journal of Food Science and Technology, 2020
The main goal of this study was to compare the changes that happen during the frying process with the refined oleic sunflower oil (ROSO), refined olive oil (ROO) and refined linoleic sunflower oil (RLSO) in 5-day testing period as well to evaluate the efficacy of fatty acid composition on frying stability. Each day, oil samples were withdrawn after 7 h of frying and were further subjected to analyzes for determination of different chemical properties. As a result, in the current studies were observed significant changes in all oil types in terms of chemical properties. ROSO, which contained lower linoleic acid content, had higher thermal stability than both RLSO and ROO. This result indicated that the frying efficiency of ROSO depended mainly on the linoleic acid content and the iodine value.
PHYSICOCHEMICAL CHANGES OF OLIVE OIL AND SELECTED VEGETABLE OILS DURING FRYING
Journal of Food Lipids, 2006
The performance of olive oil during intermittent frying of potato slices and cod fillets was compared to those of selected vegetable oils (corn, oliveresidue and 50/50 mixture of olive and corn oils) using conditions resembling those used in home food preparations. The main scope of this study was to decide what is the best substitute for olive oil in home frying applications. Free fatty acid content, peroxide value, polar compounds, color and viscosity were increased, whereas iodine value, polyunsaturated fatty acids content and tocopherol concentration decreased. The organoleptic quality of potato slices and cod fillets fried in all oils was determined. Significant differences in the physicochemical changes were observed. The analytical and sensory data showed that the lowest deterioration occurred in olive oil and the highest in corn oil. The 50/50 (w/w) olive/corn oil mixture proved to be a good substitute for olive oil in domestic frying applications.