Navigation Links
Olive Leaf Juice Could Be Edible Oil Antioxidant

Olive juice, obtained by pressing olive leaves, may act as an antioxidant to prolong the frying life of frying oils, suggests a study using sunflower oil. //

"The outcome of the present study suggests that crude olive juice can be used in practical operation to extend the frying life of frying oils," wrote lead author Radwan Farag from Cairo University.

The use of natural alternatives to synthetic preservatives, such as like butylhydroxyanisole (BHA) and butylhydroxytoluene (BHT), to slow down the oxidative deterioration of food is gaining interest.

According to a 2003 report by Frost and Sullivan, the synthetic antioxidant market is in decline, while natural antioxidants, such as herb extracts, tocopherols (vitamin E) and ascorbates (vitamin C) are growing, pushed by easier consumer acceptance and legal requirements for market access.

This natural antioxidant range could potentially include the polyphenol-rich extract from olive leaves, suggests new research published in the International Journal of Food Science and Technology.

The Egyptian researchers compared the antioxidant performance of 400, 800, 1600, and 2400 ppm of olive polyphenols with BHT (200 ppm) on the stability of sunflower oil under heating conditions (180 degrees Celsius, five hours per day for five days).

Measures of physical and chemical characteristics as a result of adding the antioxidant ingredients showed that no significant effect on the colour of the oil occurred by addition of any level of olive polyphenols. The formation of peroxides in the oil as a result of heating also decreased with increasing olive juice concentration, said the researchers.

"In fact, the peroxide value of the heated sunflower oil mixed with 2400 ppm of polyphenolics at the end of the heating process was about 11.3, 9.2, 2.8 and 11.4 times lower than that of the sunflower oil mixed with 400, 800, 1600 and control, respectively," they w rote.

Using the thiobarbituric acid (TBA) assay to measure lipid oxidation, the researchers report that the 400 ppm level of olive polyphenolics exhibited almost the same antioxidant activity as 200 ppm BHT, while 800 ppm of olive polyphenolics was superior to the synthetic antioxidant.

"Therefore, one would recommend adding 800 ppm of the phenolic compounds of olive leaf juice to increase oil stability," wrote Farag.

"The data indicate that the addition of olive leaf juice to sunflower oil heated at 180 degrees Celsius induced remarkable antioxidant activity and at 800 ppm level was superior to that of BHT in increasing sunflower oil stability," concluded the researchers.

The cost of the olive leaf juice could also add to the attractiveness of using the juice as an ingredient with antioxidant activity, suggested the researchers.

"One has to point out that the main goal of this work was to use a very cheap natural source to as antioxidant agent," wrote Farag. "It is of interest to note that olive leaves used as a natural source for antioxidants in the present study are obtained by the annual pruning of olive plants."

Antioxidant revenues are predicted to grow from €46m ($55m) in 2004 to €58m ($70m) in 2008, according to Frost and Sullivan.

Source-Bio-Bio Technology
'"/>




Related medicine news :

1. Olive oil does good
2. Olive Oil Found To Offer A Protective Effect Against Breast Cancer
3. Olive oil can do more good than just adding taste to your dish
4. Olive Oil Found To Preserve Cardiovascular Health by Improving Function
5. Olive oil protects the heart
6. Virgin Olive Oil – Good for Hear
7. Over 300 Ill After Eating at Olive Garden, Indianapolis
8. Olive Oil Emulsions Prevent Cardiac Bypass Surgery
9. Olive Oil Addition in Diet may Cut Cancer Risk
10. Italian Olives Recalled from Canada
11. FDA Urgently Warns Consumers About Health Risks of Potentially Contaminated Olives
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/24/2017)... ... May 24, 2017 , ... The CFOs included on ... health systems in the nation and help their organizations navigate the challenges in ... been instrumental in developing successful hospital and health system strategy. , Becker's Hospital ...
(Date:5/24/2017)... , ... May 24, 2017 , ... Technique, technique, technique ... injury when either lifting weights for strength training and exercise or simply lifting heavy ... . , “Body position is everything,” Dr. Chang says. “Improper technique in lifting anything ...
(Date:5/23/2017)... ... 23, 2017 , ... MDLand International (MDLand), a leading Electronic ... its iClinic V12.2 solution has achieved approval from National Center for Quality Assurance ... standards which emphasize team-based care with a significant focus on the care management ...
(Date:5/23/2017)... ... 2017 , ... Allegheny Health Network and the Alexis Joy ... Women’s Behavioral Health at West Penn Hospital , a unique facility that will ... pregnancy-related depression. Construction of the Center is underway with a scheduled opening in ...
(Date:5/23/2017)... ... May 23, 2017 , ... Cambridge, ... remained steady since 2009, according to a Workers Compensation Research Institute (WCRI) study, ... Monitoring the North Carolina System: CompScope™ Benchmarks, 17th Edition looks at indemnity ...
Breaking Medicine News(10 mins):
(Date:5/11/2017)... May 11, 2017  Thornhill Research Inc. ( ... awarded an $8,049,024 USD five-year, firm-fixed-priced, indefinite-quantity/indefinite-delivery contract ... Canadian Commercial Corporation (CCC) ( Ottawa, Ontario, ... to administer general anesthesia to patients requiring emergency ... "The US Marine Corps have been a longtime ...
(Date:5/10/2017)... -- Radiology has become the number one diagnostic tool ... to the number one ranking as a result.  More ... as the most complete and reliable method for clinical ... pain an MRI may confirm a suspected herniated disc ... entirely different treatment protocols.  In these circumstances, patients need ...
(Date:5/9/2017)... -- Oramed Pharmaceuticals Inc. (NASDAQ: ORMP ) ... on the development of oral drug delivery systems, ... has granted Oramed a patent titled, "Methods and ... covers Oramed,s invention of an oral glucagon-like peptide-1 ... hormone that stimulates the secretion of insulin from ...
Breaking Medicine Technology: