Posts Tagged: postharvest
UC Davis is addressing food security and economic development in Africa, Southeast Asia, Central America, and elsewhere, by coordinating an international horticulture program. The Horticulture Collaborative Research Support Program (Hort CRSP; pronounced "hort crisp") is one of 10 CRSP programs that focus on global food production and solving food and nutrition problems in developing countries. UC Davis leads the Hort CRSP, with funding support from the U.S. Agency for International Development (USAID).
Examples of projects conducted by researchers and educators throughout the world include:
- Inexpensive cold storage systems in rural, developing areas to prolong food longevity; see page 2
- Concentrated solar drying of fruits and vegetables in East Africa; see page 3
- Improving safety and quality of tomatoes in Nigeria; see page 3
- Smallholder flower production in Honduras for export markets; see page 3
The overarching goals of the Hort CRSP are to reduce poverty and improve nutrition and health of the rural poor, while improving the profitability and sustainability of horticulture in the developing world. Priorities in the Hort CRSP include gender equity, sustainable crop production, postharvest technology, food safety, market access, and financing. The program awards research funding in the U.S. and abroad to:
- Realize opportunities for horticultural development
- Improve food security
- Improve nutrition and human health
- Provide opportunities for income diversification
- Advance economic and social conditions of the rural poor, particularly women
Elizabeth Mitcham, UC Cooperative Extension specialist in the Department of Plant Sciences at UC Davis and director of the Hort CRSP, notes, “By harnessing the research, training, and outreach expertise of the land-grant universities in the U.S. to work with partners in developing countries, we can improve horticultural capabilities in much the same way that the land-grant system helped revolutionize American agriculture.”
In the three years since the program’s inception, several projects have been completed, and many are ongoing. The program’s website offers a plethora of information, along with newsletters that highlight individual projects.
The program also has a YouTube channel, with videos on Hort CRSP projects. Some of the videos are about projects that are especially important in developing countries, including:
- The TRELLIS project — bringing together graduate students and in-country development organizations; YouTube link
- Using cell phones to give real-time information to growers in rural areas of India; YouTube link
- Inexpensive cultivation practices for smallholder farmers; YouTube link
- Indigenous products increase incomes in Ghana; YouTube link
- Saving indigenous crop seeds in Southeast Asia for resource-poor farmers; YouTube link
ranked first in the U.S. on research related to agriculture, food science and nutrition, and plant and animal science, is positioned to serve global needs related to food and nutrition. Of the 10 CRSP programs administered by USAID, two of the programs are based at UC Davis — the Hort CRSP program, and the BASIS CRSP, which was highlighted in a recent Food Blog post and addresses financial issues related to agricultural productivity.
There is a wide schism between the sleek mechanical harvesting machines that briskly traverse California’s fertile croplands versus the field worker with a machete and head-basket, or possibly a donkey laden with woven baskets, that is still most commonly found in many nations.
Produce loss continues to be a significant problem. Worldwide, it is estimated that as much as one-third of the produce grown is never consumed by humans (Kader, 2005). Many logistical challenges contribute to this loss, including: ineffective or absent cooling systems, slow and rough transportation, physical damage from rough handling, and poor sanitation conditions.
In 2010, one of the most popular free titles available on the Postharvest Technology Center’s website was “Small-Scale Postharvest Handling Practices: A Manual for Horticultural Crops.” Written by Lisa Kitinoja and Adel Kader, and currently translated into 10 languages, this title was downloaded by over 22,000 readers last year. While this useful resource is very popular in the United States among small-scale farmers, over 8,000 readers benefitted from the useful content translated into Indonesian, 4,000 from the Vietnamese translation, and over 3,000 from the Arabic translation. Readers learned information about the curing of tuber crops, designing picking poles and catching sacks to gently harvest fruit, and efficient designs for packinghouse layout. (Link to all ten translations are found under the section “Small-Scale Postharvest Practices” at: http://postharvest.ucdavis.edu/Pubs/publications.shtml.)
“Many simple practices have successfully been used to reduce losses and maintain produce quality of horticultural crops in various parts of the world for many years,” asserted Lisa Kitinoja of Extension Systems International. “You don’t necessarily need costly handling machinery and high-tech postharvest treatments to be able to deliver quality produce to the marketplace. However, effective management during the postharvest period is key to reaching the desired objective.”
While most California produce shoppers are grateful for the quality and variety available in our markets, it’s nice to know that an effort is being made to improve the produce available to others not quite as fortunate as we.
Photo: Kumasi retail produce market, courtesy of Adel Kader.
You may have noticed changes lately in some little food stores tucked into your neighborhood strip mall or main street, stores with names like "Prime Time Nutrition" or "Fiesta Nutrition." These stores are now offering enticing displays of fresh fruits and vegetables along with the infant formula, breakfast cereal, eggs, cheese and other foods that have been offered to mothers, infants and children through the WIC program since 1972.
The UC Small Farm Program and Cooperative Extension advisors in three California counties are piloting a new "Farm to WIC Program" with the stores to make sure that some of the fresh produce on the shelves comes directly from small-scale local growers, helping low-income families to participate in USDA's "Know Your Farmer, Know Your Food" campaign.
The mission of the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) is to safeguard the health of low-income women, infants and children up to age 5 who are at nutrition risk. The program provides nutritional education and vouchers for supplemental foods to qualifying families. By 2002 almost half of the infants and about one quarter of children ages 1 to 4 in the country participated. The vouchers can be redeemed at most large grocery stores, but many WIC participants prefer to shop with their vouchers at the small, privately-owned WIC-only stores that have sprung up since 2000, carrying only WIC foods and catering primarily to WIC participants.
In October 2009, the WIC program began including vouchers for fresh fruits and vegetables in the monthly allotment to all participating families. This addition meant that all WIC-authorized retailers had to begin offering a variety of fresh fruits and vegetables to their customers - no problem for traditional supermarkets, but a big change for the smaller WIC-only stores. All of a sudden they were in a new business, the produce business. The store owners now have to understand their customers' fresh produce preferences as well as safe handling of perishable products that don't arrive in the store with "sell-by" dates stamped on them.
With funding from the California Department of Food and Agriculture's Specialty Crops Block Grant program, a team of UC Cooperative Extension specialists and advisors are partnering with WIC-only stores to ease this transition.
The nutrition advisor team, led by UCCE specialist Lucia Kaiser, first conducted a survey of WIC participants at WIC clinics in Alameda, Tulare and Riverside counties to determine what crops the women would like to purchase and what qualities were most important to them in deciding what to buy. Using this information, farm advisors in each county, led by UC Small Farm Program director Shermain Hardesty, introduced local growers who could supply the selected crops in season to WIC-only store owners at stores popular with WIC participants. Soon, staff in the stores will participate in post-harvest handling training sessions led by UCCE specialist Marita Cantwell and will each receive colorful posters and handouts to help their customers select, prepare and store the fresh produce.
Lessons learned from this UC pilot project will help connect local small-scale fruit and vegetable growers with WIC retailers and keep the best local fruits and vegetables available to WIC families throughout California.
Take your time to peruse the sites listed below. There is some fascinating and very handy information to be had. Many of these sites also offer terrific publications at nominal prices, but this blog lists only those that are free . . . and we all love a bargain! Many more publications and programs are available than those listed below.
After looking at these lists, you never know when you’ll be inspired to pickle some olives or field dress a deer. As for me, my latest food craze is cheese-making. Two weeks ago I made goat cheese (chèvre, to be sure), and last weekend I made camembert and blue cheeses. Now I just have to be patient for two months while they ripen . . .
Bon appétit and healthful eating!
UC Agriculture and Natural Resources publications [link]
- Tomatoes: Safe methods to store, preserve, and enjoy [link]
- Olives: Safe methods for home pickling [link]
- Egg basics for the consumer: Packaging, storing, and nutritional information [link]
- Guidelines for food safety during short-term power outages: Consumer fact sheet [link]
- Key points of control and management for microbial food safety: Edible landscape [link]
- Safe handling of fruits and vegetables [link]
- Safe methods of canning vegetables [link]
- The healthy brown bag: 15 lunches for school-aged children [link]
Postharvest Technology Research and Information Center [link]
- Storing fresh fruits and vegetables at home – poster (first copy free) [link]
Fruit and Nut Research and Information Center [link]
- The Backyard Orchard – A plethora of publications on growing and harvesting in the home orchard [link]
Nutrition publications from UC Davis [link]
- Nutrition and health information sheets on everything from energy drinks to osteoporosis to anemia, and more [link]
- EatFit - An interactive web program to aid middle-school students in personal dietary analysis and "guided goal setting" [link]
- “Nutrition Perspectives” newsletter - Research-based information on ongoing nutrition and food-related programs [link]
- “Nutrition to Grow On” - A curriculum for grades four through six that offers teachers a direct link between the garden and nutrition education [link]
Food Safety Videos
- Take a look at these humorous — but serious — music videos on food safety by renowned food safety expert Dr. Carl Winter. Who knew that the Beatles’ classic “I Wanna Hold Your Hand” could morph into “You’d Better Wash Your Hands”? [link]
- More food safety music [link]
Cooperative Extension Offices [link]
- Many county offices have publications on food production that is specific to climatic or regional needs of that county.
Publication of the Day!
- Protecting food safety when shooting, field dressing, bringing a deer home, and cutting the carcass [link]
Do you remember when store-bought produce was succulent every time you took a bite? Then you’re old – well, at least you’re not a kid. Today’s youth in America have a different experience with store-bought fruits and vegetables – sometimes they’re yummy and juicy, sometimes they taste like chalk.
What’s a mother to do?
"It’s a problem, because often you have only one window of opportunity to introduce a new fruit or vegetable to your child,” says Beth Mitcham, UC Cooperative Extension (CE) specialist with the UC Davis Department of Plant Sciences, director of the UC Davis Postharvest Technology Center and concerned mother. “And if the food doesn’t taste good, they aren’t going to like it.”
And if they don’t like it, they’re not going to eat it. That’s how it is for all of us, but new research by Mitcham and a broad group of experts may remedy the situation. Mitcham and her team recently received a nearly $6 million grant from the USDA for a project designed to improve the flavor quality of fruits and vegetables available to U.S. consumers and thereby increase their consumption.
A collaboration between UC Davis and the University of Florida, the project is co-directed by Mitcham and Jeff Brecht from the UF along with nearly 30 faculty members between the two institutions including CE Specialists Marita Cantwell, Trevor Suslow and Carlos Crisosto and Assistant Professor Florence Negre-Zakharov from the UC Davis Department of Plant Sciences. Other UC Davis faculty represent Agriculture and Resource Economics, Biological and Agricultural Engineering, Food Science and Technology, Viticulture and Enology and Public Health Sciences. More than twenty-five stakeholders from the produce industry are also on board.
As a postharvest technology specialist, Mitcham knows full well the challenges growers, packers and shippers face in getting crops from the field to the market in a condition shoppers will buy.
“Experience shows produce buyers rarely reject produce because it’s under-ripe,” Mitcham says. “But they will reject it if there is any bruising or decay.”
Most of us understand the problem – in broad strokes, at least. Take a tomato, for example. If we have the time, space and climate to grow them ourselves, the shelf life of our homegrown tomatoes would be the time it takes to pick one from the vine, walk into the house and slice it open. (Or the time it takes to bite into it right there in the yard. Yum.) If we’re harvesting tomatoes to deliver to a friend some distance away, we might want to pick them when they’re a little less ripe so they won’t get squished along the way.
Imagine, then, the challenge growers, shippers and retailers face delivering tomatoes to customers all across the globe year-round. Since shoppers eschew bruised produce, growers have to harvest them before they’re fully ripe, before their flavor has reached its full potential.
The team is looking at how they can alter that equation so our produce is more flavorful and still safe and economically viable for the industry. Their research will examine each step in the post-harvest chain asking questions like these:
- Can we slow the ripening process, so it can be picked later and still be fresh when it reaches the market? Is there new technology – in sorting, packing, shipping or anything else - that can help? How is flavor enhanced and inhibited during shipping and storing?
- If produce was riper during postharvest handling, would that affect our food safety risk? Would more pathogens survive?
- If produce was consistently flavorful, would consumers buy more?
“I think we can do a better job developing varieties with more flavor and improving postharvest performance so consumers can count on flavorful fruits an vegetables,” Mitcham says. “And I think this project will help.”
More information on this flavor project can be found in The Spring 2010 Leaflet.