Navigation Links
Additives meant to protect vitamin C actually cause more harm

WEST LAFAYETTE, Ind. - Anti-caking agents in powdered products may hasten degradation of vitamin C instead of doing what they are supposed to do: protect the nutrient from moisture.

Lisa Mauer, a Purdue University professor of food science; Lynne Taylor, a professor of industrial and physical pharmacy; and graduate student Rebecca Lipasek study deliquescence, a reaction in which humidity causes a crystalline solid to dissolve. They wanted to understand how anti-caking agents protect substances such as vitamin C from humidity.

In Mauer's laboratory, different anti-caking agents were blended with powdered sodium ascorbate, a common form of vitamin C, and were exposed to different relative humidities. Normally, sodium ascorbate deliquesces, or dissolves, at 86 percent relative humidity and is stable below that level. Some anti-caking agents, however, caused the degradation to begin at lower humidity levels.

"The additives that the food industry puts in to make these powders more stable didn't help the vitamin C, and in some cases actually made things worse," Lipasek said.

Once vitamin C changes chemically, it no longer holds its nutritional value.

The findings suggest that foods made with powdered vitamin C may lose the vitamin's nutrients at a lower humidity than once thought. The team's findings were published in the current issue of the Journal of Food Science.

A variety of anti-caking agents were studied.

"Some of the agents act like little raincoats, covering the particles and protecting them from moisture. Others will absorb the water themselves, keeping it away from the vitamin C particles," Mauer said. "I really thought some of those anti-caking agents would help, but they didn't."

The problem, according to the research, is the chemical properties of the anti-caking agents themselves.

The water-repellent agents, which act like raincoats, are mobile, Lipasek said. When

Contact: Brian Wallheimer
Purdue University

Page: 1 2

Related biology news :

1. Parents feel shock, anxiety and the need to protect children with genital ambiguity
2. Using bone marrow to protect the brain
3. Study in underwater laboratory may help manage seaweed-eating fish that protect coral
4. Cellular metabolism self-adapts to protect against free radicals
5. Dendritic cells in liver protect against acetaminophen toxicity
6. Preserving 4 percent of the ocean could protect most marine mammal species, study finds
7. Protecting cells
8. Melanins trick for maintaining radioprotection studied
9. Penn study shows an ancient crop effective in protecting against a 21st century hazard
10. Ongoing global biodiversity loss unstoppable with protected areas alone: Study
11. NOAA, Bermuda partner to protect humpback whales in the North Atlantic
Post Your Comments:
(Date:10/7/2015)... , October 8, 2015 ... revenues for Fingerprint Cards (FPC) during third quarter 2015 amounted ... guidance of around 860 MSEK that was communicated 20 August ... a further strengthened delivery capacity and a continued growing demand ... 2015 is estimated to be higher than during the third ...
(Date:10/5/2015)... ) releases the following ... NXTD ), a biometric authentication company focused on the ... ) releases the following market and company update ... authentication company focused on the growing mobile commerce market. ... ) releases the following market and company update ...
(Date:9/30/2015)... , Sept. 30, 2015  The U.S. Court of ... another key ruling in favor of Crossmatch ™, ... fingerprint scanner company Suprema and its U.S. partner Mentalix ... a trade provision that declares it unlawful to engage ... infringing two of Crossmatch,s patents, the 5,900,993 patent and ...
Breaking Biology News(10 mins):
... The Proceedings of the National Academy of Science ... Medicine generated a mouse model exhibiting reduced inflammation. ... transcription factor LITAF (Lipopolysaccharide [LPS]-Induced TNF-Alpha Factor) controls ... better known and studied NF-kB transcriptional regulator. ...
... for insects and other small terrestrial animals by firing ... the water's surface. These water shots were once thought ... discovered new levels of sophistication in the archerfish's hunting ... behavior has evolved. The findings are reported by Thomas ...
... at the University of Rochester may have answered one ... our neurons, which are responsible for our crystal-clear thoughts, ... the November issue of Nature Neuroscience, the Rochester study ... "noisy," signals to represent the ambiguities of the real ...
Cached Biology News:
(Date:10/8/2015)... 2015   Intrexon Corporation (NYSE: XON ... appointment of Joseph L. Vaillancourt as Senior ... Nimrodi who continues in his role as Head ... to generate sustainable, biologically based solutions to environmental problems. ... held a variety of key roles including, Vice President ...
(Date:10/8/2015)... IRVINE, Calif. , Oct. 8, 2015 ... announced its expansion into the North American market with ... Asia and Europe ... a pioneer of Target Enrichment methodology and sample preparation ... or NGS, facilitates both hereditary and somatic genetic testing ...
(Date:10/8/2015)... 2015  The ALS Association, in partnership with Prize4Life, ... to revolutionize communication technology solutions for people living with ... ALS (amyotrophic lateral sclerosis) is a progressive neurodegenerative disease ... the spinal cord. Eventually, people with ALS lose the ... leads to total paralysis and death within two to ...
(Date:10/8/2015)... , ... October 08, 2015 , ... ... into an exclusive license agreement to develop and commercialize intellectual property rights belonging ... original agreement from February 2009, and affords exclusive worldwide rights to intellectual property ...
Breaking Biology Technology:
... 9, 2011) The brain is a black box. ... much like the inner workings of a computer chip. ... economy of an assembly line, neural circuits are impenetrable ... Department of Neurobiology have developed a technique for unraveling ...
... of Standards and Technology (NIST),have demonstrated an ... mechanical component 1,000 times,more vigorously than ever ... a new tool for processing,information and potentially ... object at the,smallest possible, or quantum, scale. ...
... NEW YORK, March 9, 2011 ... is available in its catalogue: ... and Market Forecasts to 2017 ... Retinopathy Therapeutics - Pipeline Assessment and Market ...
Cached Biology Technology:
... Software reads and processes raw ... microarray data for analysis. ... one 2-year license for Feature ... , * one CD-ROM ...
... imported for data analysis , Automatic grid, subgrid ... template assignment , ... Extensive background and signal options to optimize, ... results , ...
... DNA Gel Stain combo offers these benefits: ... products separately Offers a ... Eliminates risks to yourself, the environment ... from 100 bp to >30 kb. UltraPure Agarose is ...
... stocks contained in standard 96-well microtiter plates. ... approximately 5,000 clones per plate. After positive ... the corresponding subplate is screened with a ... well(s). Cells from a positive well are ...
Biology Products: