Currently UK shoppers have to pay twice as much for some organic products. Organic apples, for example, are around double the price of conventionally grown apples in Sainbury’s, Waitrose and Tesco.
One of the major contributing factors affecting the price is the short shelf life of organic produce. Conventional produce can be treated with inexpensive chemicals to aid preservation. But these cannot be used for organic produce, as by definition no artificial chemicals are used during processing.
‘With some organic fruit and veg, there can be large losses [during storage],’ Claudia Ruane, spokes person for Abel & Cole organic produce retailers told C&I. Ruane explained that although many organic farms do have reasonably sophisticated refrigeration units, there are very expensive and used only for brief storage before collection. ‘These are important and costly but if paying out for these facilities can ensure a whole crop is not rejected by a retailer because it is a little limp or dehydrated, then it is a cost that has to be absorbed,’ she said.
Edna Pesis and her team at the Volcani Center, Israel, have devised what they expect to be an effective and cheap technique to keep apples in cold storage for longer. A simple week long pre-treatment with low levels of oxygen at 20ºC was shown to prevent scald formation - a type of chilling injury associated with prolonged cold storage. Pesis said that 90% of the treated apples were ‘saved from the scald problem in addition to other physiological diseases,’ after eight months of cold storage. (Journal of the Science of Food and Agriculture DOI: 10.1002/jsfa2873). 100% of untreated apples were lost after eight months.
Pesis says that the technique can be tweaked for use with avocados, tomatoes and other organic produce.
Although price is an issue, organic produce is becoming more and more attractive to the consumer because of increasing evidence that it may be the healthier option. Organic peppers for example have been found to have 33% and 26% higher levels of vitamin C and phenolic compunds, respectively, than conventional peppers(JSFA DOI: 10.1002/jsfa2966). A recent study also revealed organic kiwifruit to be healthier than conventional (DOI 10.1002/jsfa.2820; C&I Issue 8 March 2007).
SCI Press Office | idw
New study shows producers where and how to grow cellulosic biofuel crops
17.01.2018 | University of Illinois College of Agricultural, Consumer and Environmental Sciences
Robotic weeders: to a farm near you?
10.01.2018 | American Society of Agronomy
On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.
We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...
What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.
Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...
At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...
Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.
Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...
08.01.2018 | Event News
11.12.2017 | Event News
08.12.2017 | Event News
19.01.2018 | Materials Sciences
19.01.2018 | Health and Medicine
19.01.2018 | Physics and Astronomy