scholarly journals Organik Bahçe Ürünlerinin Hasat Sonrası Kalitelerinin Korunması

Author(s):  
Fisun Gürsel Çelikel

Not only cultural treatments in orchard but also postharvest handling affect the taste, shelf life and nutritional quality of organic fruits and vegetables. Organic crops are mostly harvested at ripe stage or close to ripen, thus, their shelf life is shorter and they are more perishable. Postharvest physiology and requests of crops should be considered during postharvest handling in order to maintain their high quality and prevent postharvest losses. The main aim in postharvest concept is to slow down the metabolism of fresh crops continue to live after harvest. The most important factor is temperature. The fruits and vegetables should be protected from high temperatures and cooled immediately after harvest. The cold chain should be kept until consumer. In addition, diseases can be prevented by controlling environment. Sanitation is another rule to consider. All these rules are important for all growers; however they are of special importance for organic horticulture which allows limited postharvest technologies. In this review, the allowed postharvest treatments of certificated organic fruits and vegetables are given. Preharvest factors, harvest, postharvest factors, cooling methods, cold storage, sanitation methods and products, ethylene and its control, and other specific postharvest subjects are discussed.

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 693f-693
Author(s):  
Eric A. Curry

Present dietary recommendations for fruits and vegetables should be based on the bioavailability of essential nutrients at the time of optimum harvest. Few people, however, are fortunate enough to have available freshly harvested produce all year. With the development of improved postharvest technology, shelf life has increased dramatically in many parts of the world. How does the nutritional quality of fruits and vegetables change with increasing storage time, changes in storage atmosphere, different postharvest processes? Do these changes have an impact on dietary recommendations? Apples are capable of being stored for up to 12 months with properly managed temperature and storage atmosphere. Because information regarding this subject is lacking for apple (and many other fruits and vegetables), perhaps a model can be developed based on work with other commodities to help us understand the nutritional changes associated with different postharvest treatments.


2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Audrey Olson ◽  
Katie Vieyra ◽  
Alexandra Polasky ◽  
Amy Best ◽  
Lois Durant ◽  
...  

Abstract Objectives To assess the overall nutritional quality of meals chosen by undergraduate students during weekday lunches at campus all-you-care-to-eat dining halls. Methods A previously validated exit survey was used to collect self-reported data from undergraduate students on foods and beverages they consumed during a single visit to two all-you-care-to-eat dining halls on the George Mason University Fairfax campus, during 4 weeks. (n = 468) Nutritional quality of each meal was evaluated on a 7-point rubric, according to the ‘Wellness Meal’ standards from the Partnership for a Healthier America: ≤700 kilocalories, ≤10% calories from saturated fat, ≤800 mg sodium, ≥2 ounces whole grains, ≥1 cup lowfat dairy, ≥ 1.75 cups fruits and vegetables, and ≥ 2 ounces lean protein. Results Of the maximum score of 7 on the meal nutritional quality rubric, 4 participants earned the highest score of 5, whereas 43, 150, 132, 88, and 51 participants had scores of 4, 3, 2, 1, and 0, respectively. The most commonly attained rubric standard was saturated fat, where 60% of participants consumed ≤ 10% calories from saturated fat and average consumption was 9.1% (± 5.4%) of calories. The least achieved rubric category was lowfat dairy, where only 2% of students consumed 1 cup equivalent, followed by only 9% of participants having consumed the 2 ounce equivalent of whole grains. Approximately one-third of students met calorie, lean protein, sodium, and fruit/vegetable standards. Conclusions Despite a wide variety of food options in the campus all-you-care-to-eat dining halls during the lunch hours, most undergraduate students consumed meals of subpar nutritional quality, with the vast majority meeting fewer than half the categories on the meal nutritional quality rubric. All-you-care-to-eat university dining halls may be a prime location for nutrition education and interventions. Funding Sources This research was funded by the George Mason University Provost's Multidisciplinary Research Award.


Author(s):  
Saurav Negi ◽  
Neeraj Anand

India, the world's second-largest producer and one of the centers of origin of Fruits and Vegetables is also one of the biggest food wasters in the world. The challenge of feeding India's billion plus people is not really about agriculture and food production but getting the quality food to the concerned people in a right time. The biggest contributors to this waste are lack of temperature controlled transport and inadequate quality of cold storage facilities for both Farmers and Food sellers i.e. retailers. What India lacks, and needs, is a well-developed, world-class cold chain infrastructure. Without it, India's problems are vast and likely to grow. In this chapter, the authors tries to outlines the extent of Fruits and Vegetables waste in India (at various stages from farm to retail) and its ramifications on food production and safety. Authors also highlighted the challenges faced by cold chain sector in India and a roadmap for improvements. As Indian economy is based on agriculture, development of Cold Chain infrastructure from farm to retail points will play a crucial role.


2008 ◽  
Vol 11 (4) ◽  
pp. 395-404 ◽  
Author(s):  
Zo J Rambeloson ◽  
Nicole Darmon ◽  
Elaine L Ferguson

AbstractObjectivesTo assess the nutritional quality of food aid delivered by food banks in France and to identify practical modifications to improve it.DesignNational-level data were collected for all food aid distributed by French food banks in 2004, and its nutrient content per 2000 kcal was estimated and compared with French recommendations for adults. Starting with the actual donation and allowing new foods into the food aid donation, linear programming was used to identify the minimum changes required in the actual donation to achieve the French recommendations.ResultsFrench food-bank-delivered food aid does not achieve the French recommendations for dietary fibre, ascorbic acid, vitamin D, folate, magnesium, docosahexaenoic acid, α-linolenic acid and the percentage of energy from saturated fatty acids. Linear programming analysis showed that these recommendations are achievable if more fruits, vegetables, legumes and fish were collected and less cheese, refined cereals and foods rich in fat, sugar and/or salt. In addition, new foods not previously collected are needed, particularly nuts, wholemeal bread and rapeseed oil. These changes increased the total edible weight (42%) and economic value (55%) of the food aid donation, with one-third of its edible weight coming from fruits and vegetables, one-third from staples, one-quarter from dairy products and approximately a tenth from meat/fish/eggs.ConclusionsImportant changes in the types and amounts of food collected will improve the nutritional quality of food-bank-delivered food aid in France. Such changes are recommended to improve the diets of deprived French populations.


2009 ◽  
pp. 57-106 ◽  
Author(s):  
Ariel R. Vicente ◽  
George A. Manganaris ◽  
Gabriel O. Sozzi ◽  
Carlos H. Crisosto

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