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Postharvest Practices for Organically Grown Products

FALLIK E., ILIĆ Z.: Pre and postharvest treatments affecting flavor quality of fruits and vegetables. p.139-169 In: Siddiqui M.W.(ed), Preharvest modulation of postharvest fruits and vegetables quality. AAP-CRC Press, USA. 2017 FONSECA, S.C., OLIVEIRA, F.A.R., LINO, I.B.M., BRECHT, J.K., CHAU, K.V.: Modelling O2 and CO2 exchange for development of perforation mediated modified atmosphere packaging. Journal of Food Engineering, 43: 9-15, 2000 FELIZIANI, E., SMILANICK, J.L., MARGOSAN, D.A.: Preharvest fungicide, potassium sorbate, or chitosan use on quality

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Effect of postharvest treatments on the longevity of cut inflorescences of ‘Rialto’ oriental lily

Abstract

Cut lily flowers are very popular but their longevity is not satisfactory. The quality of cut lily flowers is determined by two factors: the longevity of the flowers and the general appearance of the entire cut stem during its vase life. The aim of this work was to evaluate the effects of gibberellic acid (GA3), standard preservative (8HQC and 2% sucrose) and commercial preservatives Chrysal Professional 2 and Chrysal sachet as well as Floralife 200 and Floralife 300 on the quality of ‘Rialto’ cut oriental lily, a white blooming cultivar very popular on the Polish market. The contents of reducing sugars, soluble proteins, free amino acids and free proline were also determined in the senescing flowers. As a major problem in the postharvest handling of lilies is leaf yellowing, the effects of postharvest treatments on the quality of leaves and their chlorophyll contents were also studied. Conditioning (24 h) with GA3 (500 mg d.m.−3) immediately after harvest delayed chlorophyll loss in leaves. When combined with the standard preservative and commercial preparations Chrysal Professional 2 and Chrysal sachet as well as Floralife 200 and Floralife 300, GA3 prolonged flower vase life. The most effective method was using GA3 and Floralife products, which prolonged the vase life of flowers to 23 days, 43% longer relative to the untreated flowers, and maintained the decorative value of the leaves (53 days). During the senescence of flowers held in water, the contents of reducing sugars, free amino acids and proline increased. However, the holding solutions modified changes in these parameters relative to the control.

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The Effect of Postharvest Treatments on Flower Quality and Vase Life of Cut Alstroemeria ‘Dancing Queen’

Abstract

Alstroemeria is one of the most popular cut flowers in Europe, due to its postharvest longevity and a wide colour palette. However, premature leaf yellowing reduces the ornamental value of the flowering stems even before opening of the secondary florets in cymes. The aim of this study was to evaluate the use of sucrose, gibberellin and 8-hydroxychinoline citrate as postharvest treatments of cut Alstroemeria ‘Dancing Queen’.

Several “flower models” were used to distinguish the effects of the chemicals on senescence of flowers and leaves in the above cultivar. Flowering stems were harvested in November 2011 and March 2012 and the response to treatments for both dates differed: while the longevity of primary and secondary florets was prolonged by the standard preservative (8-HQC+S) in the autumn, there was no difference for the spring collection date. For the March harvest, the secondary flower buds opened faster than for the November harvest, where bud opening was generally hastened by 8-HQC+S. Also, the flower model affected floret longevity and changed the response to the treatments: florets on defoliated flowering stems responded better to the preservative than those on stems with leaves. Florets from different flower models differed in diameter: those from complete stems were usually larger than those from isolated cymes. The secondary florets were much smaller than the primary florets, especially in isolated cymes. Both, GA3 and the standard preservative significantly increased the second floret diameter in all models; however, there were no additive effects of the treatments. GA3 significantly postponed leaf yellowing in all floral models while the sugar-containing preservative had little effect. Generally, the flower model had significant effect on leaf longevity.

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The Influence of Postharvest Treatment and Short Term Storage on Quality and Durability of Fresh Cut Crisp Lettuce (Lactuca sativa L.Var. capitata L.)

The Influence of Postharvest Treatment and Short Term Storage on Quality and Durability of Fresh Cut Crisp Lettuce (Lactuca sativa L.Var. capitata L.)

The experiment was conducted with crisp lettuce cv. 'Grenada". After harvesting and cutting the lettuce was subjected to the following treatments: rinsing in tap water and centrifuging, rinsing in 0.3% citric acid solution and centrifuging and rinsing in 0.3% ascorbic acid solution and centrifuging. The 200 g samples of cut lettuce were packed in polyethylene (PE) film bags tight sealed and also with perforation. Additionally the untreated lettuce was packed also in P-Plus plastic bags.

There was no effect from rinsing in tap water or organic acid solutions on reduction of browning or quality of cut lettuce.

The storage temperature significantly influenced the quality of cut lettuce. At 0°C the fresh cut crisp lettuce maintained good quality up to 6 days but only 2 days at 6-8°C. After 2 days at 18-20°C browning was visible and after 4 days there were symptoms of rotting.

Comparing suitability of unit packaging for short storage of fresh cut lettuce, it was shown that lettuce kept in P-Plus film bags maintained the best quality.

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The Influence of Postharvest Treatment and Type of Packaging on Quality and Storage Ability of Cauliflower (Brassica oleracea L. var. botrytis)

The Influence of Postharvest Treatment and Type of Packaging on Quality and Storage Ability of Cauliflower (Brassica oleracea L. var. botrytis)

The influence of postharvest hot and cold water treatments on the quality and storage ability of cauliflowers were studied. Also the usefulness of different type of unit packaging for cauliflower storage was compared. The cauliflower heads of Fremont F1 cultivar, after different treatments, were stored at 0°C for six weeks. Postharvest hot water treatment with temperature 38-54°C has not influenced on the storage ability of cauliflower. The heads treated with water of temperatures 50°C and 54°C have shown after six weeks of storage higher rooting, greater compactness loss and colour changes than not treated heads. Postharvest cooling of heads with ice water has not affected quality after storage. It was found that the type of packaging influenced on cauliflower quality after storage. The best quality of cauliflowers after 28 and 42 days of storage was maintained in P-Plus film bags and PE film bags with perforation (8 holes ϕ0.04 cm). The satisfactory quality was maintained also in case of heads wrapped in stretch film and stored for 42 days. The unsatisfactory quality due to heads darkening was found for cauliflowers kept in tightly sealed PE film bags.

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Postharvest Treatments with Methyl Jasmonate and Salicylic Acid for Maintaining Physico-Chemical Characteristics and Sensory Quality Properties of Apricot Fruit during Cold Storage and Shelf-Life

., Valero D., Díaz-Mula H.M., Serano M., Acetyl salicylic acid alleviates chilling injury and maintains nutritive and bioactive compounds and antioxidant activity during postharvest storage of pomegranates. Postharv. Biol. Technol. 2011, 60, 136–142. 22. Shafiee M., Taghavi T.S., Babalar M., Addition of salicylic acid to nutrient solution combined with postharvest treatments (hot water, salicylic acid, and calcium dipping) improved postharvest fruit quality of strawberry. Sci. Hortic., 2010, 124, 40–45. 23. Srivastava M.K., Dwivedi U.N., Delayed ripening of

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Efficacy of coupling gamma irradiation with calcium chloride and lemongrass oil in maintaining guava fruit quality and inhibiting fungal growth during cold storage

REFERENCES A bd A lla M.A., E l -S ayed H.Z., E l -M ohamedy R.S., 2008. Control of Rhizopus rot disease of apricot fruits ( Prunus armeniaca L.) by some plant volatiles aldehydes. Res. J. Agr. Biol. Sci. 4, 424-433. A bd E l -M onem E.A.A., Z ahran A.A., S haban A.E., 2013. Role of some postharvest treatments in maintaining mango fruit quality during cold storage. J. Appl. Sci. Res. 9, 2355-2366. A damu S., B ukar A., M ukhtar M.D., 2009. Isolation map and identification of postharvest spoilage fungi associated with sweet oranges

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Improving Storability of Strawberries with Gaseous Chlorine Dioxide in Perforated Clamshell Packaging

, 405-409. 36. Waterhouse A.L., Polyphenolics: Determination of total phenolics. 2002, in: Current Protocols in Food Analytical Chemistry (ed. R.E. Wrolstad). John Wiley & Sons, New York, U.S.A., pp. I1.1.1-I1.1.8. 37. Wu B., Guo Q., Wang G., Peng W., Wang J., Che F., Effects of different postharvest treatments on the physiology and quality of ‘Xiaobai’ apricots at room temperature. J. Food Sci. Technol., 2015, 52, 2247-2255. 38. Zhang L., Yan Z., Hanson E.J., Ryser E.T., Efficacy of chlorine dioxide gas and freezing

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Physicochemical Traits of Seedless Barberry (Berberis vulgaris L.) Fruits Stored Under Refrigeration as Affected by Heat and Calcium Chloride Treatments

). Effect of pre-harvest calcium chloride applications on fruit calcium level and post-harvest anthracnose disease of papaya. Crop Prot. , 55: 55-60, https://doi.org/10.1016/j.cropro.2013.10.009 Mahajan, P.V., Caleb, O.J., Singh, Z., Watkins, C.B. & Geyer, M. (2014). Postharvest treatments of fresh produce. Philos.Trans.A.Math.Phys. Eng.Sci., 372: 1-19, 20130309, https://doi.org/10.1098/rsta.2013.0309 Makkar, H. P., Blümmel, M., Borowy, N.K. & Becker, K. (1993). Gravimetric determination of tannins and their correlations with chemical and protein

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Storage and Quality of Apples ‘Reinette Simirenko’, Depending on the Dose of Post-Harvest Treatment with Ethylene Inhibitor 1-MCP

.pdf [in Ukrainian with English abstract] Melnyk O., Drozd О. 2012b. Changing the physical parameters of apples from postharvest treatment the ethylene inhibitor. Ukrainian Black Sea Region Agrarian Science 4(68): 187–194. https://visnyk.mnau.edu.ua/statti/archive/n68v4r2012t1.pdf [in Ukrainian with English abstract] Melnyk O., Drozd O., Melnyk I. 2017. Storage ability of Renette Simirenko apples treated with ethylene inhibitor after picking, depending on harvest date and type of orchard. Scientific Reports of NULES of Ukraine 1(65): 11 p. http

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