Crop Quality

Long Lasting and Fresher Food Products

Granny Smith Apples Deprived of Oxygen Stay Fresh for Over a Year

strange things are happening at the volcani center in beit dagan. potatoes sprayed with spearmint oil are not sprouting for months, granny smith apples deprived of oxygen stay fresh for over a year and cows are eating less grain and producing more milk.


these are just few projects at the agricultural research organization, the research arm of the agriculture ministry that houses six separate research institutes. “we don’t have lot of land here in israel and 60 percent of it is desert,” ada rafaeli, the associate director for international cooperation and academic affairs, told the media line.

“but we can provide know-how and innovation for the rest of the world.” some israeli innovations, like drip irrigation which conserves water, are well-known. but others, like colored netting draped over plants to increase yields or especially sweet seedless tangerine smarketed in europe,are less known.


the institute is also focused on improving productivity and yields. “in 1955, one israeli farmer could feed 15 people while in 2007, that same farmer could feed 100 peopie,” she said. “israel is subsistent in vegetables and fruits but we still need to import grain,so we’re developing special varieties of grain that are only for animal feed or that contain more protein.”


 in hot and humid greenhouse, dr. moshe lapidot of the institute of plant sciences is growing special strands of tomatoes that can flourish despite being infected with the common tomato yellow leaf virus. some of the plants look withered and shrunken others are flourishing. “all of these plants are infected with the virus which shows up wherever there are tomatoes and dramatically lessens the yield, lapidot told the media line. “we identified gene that is resistant to the virus and we introduced the gene into the plant. it took us seven years to find the gene, but today seed companies are looking to buy our tomato plants.”


in another building on the large campus, dr. amnon lichter, the head of the department of postharvest science of fresh produce, holds up brown, decaying granny smith apple. “these apples have not been treated and they look brown and unappetizing, he” told the media line. “those brown patches called “superficial scalding “can be prevented with insecticides, but we’re trying another way.” that other way is called “controlled suffocation” and involves keeping the apples in storage container with no oxygen for week. the oxygen can be removed using liquid nitrogen after that, the apples will remain perfectly green for well over year.


 he moves on to two boxes of potatoes one with unsightly sprouting and one with smooth russet skin. then he opens small vial. “smell this/’he urges. “it’s spearmint oil and when rubbed on the potatoes, it keeps them from sprouting for almost year, “he said. “this replaces the use of chemicals with natural compound and is being used commercially as well.”


 about one-third of food is wasted, says rafaeli, mostly because it goes bad before it can be eaten.

israel is trying to come up with solutions to make food last longer and taste better. in another room, lichter opens black suitcase and takes out an instrument that looks little like handheld microscope.

“this costs more than car in israel,” he said with smile. “but it measures things like firmness of fruit. we scientists like to measure everything”.

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