scholarly journals Layered Coatings to Control Weight Loss and Preserve Gloss of Citrus Fruit

HortScience ◽  
1995 ◽  
Vol 30 (2) ◽  
pp. 296-298 ◽  
Author(s):  
Robert D. Hagenmaier ◽  
Robert A. Baker
Keyword(s):  
Weight Loss ◽  
Citrus Sinensis ◽  
Citrus Fruit ◽  
Double Layers ◽  
Citrus Paradisi ◽  
Moisture Barrier ◽  
Layered Coatings ◽  
Polyethylene Wax ◽  
Outer Coating

Valencia oranges [Citrus sinensis (L.) Osbeck cv. Valencia] and Marsh grapefruit [Citrus paradisi Macf.] were treated with single or double layers of coating. In cases where two coatings were applied, the first coating was a moisture-barrier wax; the second was either polyethylene wax or a mixture of shellac and resin ester. The inner coating reduced weight loss, and the outer coating imparted gloss. Fruit gloss, as measured by reflectometer, decreased more rapidly during 1 week at 20C with a single glossy coating than with the same coating applied as a second layer over a wax-based first coating. For citrus fruit, using resin ester or shellac as a high-gloss second coating tended to overly restrict the exchange of O2 and CO2; however, two layers of wax did not.

scholarly journals 723 PB 459 THE POTENTIAL EFFECTS OF POSTHARVEST CALCIUM CHLORIDE DIPS AND LIPID WAX ON RIND BREAKDOWN IN THE CHIRONJA

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 536f-536
Author(s):  
Arturo Cedeño Maldonado ◽  
Patrick E. Chesney ◽  
Essau Orengo
Keyword(s):  
Weight Loss ◽  
Calcium Chloride ◽  
Citrus Sinensis ◽  
Citrus Paradisi ◽  
Excellent Quality ◽  
Maturity Stages

The chironja (Citrus sinensis L. Osbcek* Citrus paradisi Macf.) is a citrus hybrid of excellent quality. Attempts at commercialization has been limited by the susceptibility of the fruit to rapid rind breakdown after harvest. A study was undertaken to determine the effects of postharvest calcium chloride (CaCl2) dips and lipid waxes on rind quality of two chironja clones at two maturity stages. CaCl2 dips had no significant effect on weight loss irresponsible of clones and maturity. Waxing improved lustre of fruits. retarded aging and shrinkage and slightly inhibited degreening. Pac Rite wax was more effective than Prima Fresh wax. Clone 2-4 was less resistant than clone 3-8 to rind breakdown and made better use of the wax treatments. Mature yellow fruits had a better response to treatments than mature green fruits in retarding weight loss. Untreated fruits deteriorated rapidly after five days. Symptoms of rind breakdown were incipient in calcium treated fruits. Preharvest calcium applications and/or postharvest waxing may reduce the incidence of rind breakdown in the chimnja.

scholarly journals Desenvolvimento vegetativo e custo de produção de porta-enxertos de citros em recipientes para fins de subenxertia

2007 ◽  
Vol 42 (5) ◽  
pp. 679-687 ◽  
Author(s):  
Eduardo Augusto Girardi ◽  
Francisco de Assis Alves Mourão Filho ◽  
Sônia Maria de Stefano Piedade
Keyword(s):  
Citrus Sinensis ◽  
Poncirus Trifoliata ◽  
Citrus Paradisi ◽  
Citrus Jambhiri ◽  
Citrus Volkameriana

O objetivo deste trabalho foi avaliar o desenvolvimento vegetativo e estimar o custo de produção de 11 porta-enxertos de citros para fins de subenxertia, em diferentes recipientes. Avaliaram-se limão 'Cravo' clone Limeira (Citrus limonia Osbeck); citrumelo 'Swingle' (Poncirus trifoliata (L.) Raf. x Citrus paradisi Macf.); tangerina 'Cleópatra' (Citrus reshni Hort. ex Tanaka); tangerina 'Sunki' (Citrus sunki Hort. ex Tanaka); limão 'Volkameriano' clone Catânia 2 (Citrus volkameriana Pasquale); laranja 'Caipira' clone DAC (Citrus sinensis L. Osbeck); limão 'Rugoso da África' clone Mazoe (Citrus jambhiri Lush.); Poncirus trifoliata 'Davis A'; tangerina 'Sun Shu Sha Kat' (Citrus sunki Hort. ex Tanaka); tangerina 'Sunki' clone 2506 ou Fruto Grande (Citrus sunki Hort. ex Tanaka) e Poncirus trifoliata 'Barnes'. Foram utilizados tubetes de 290 mL, sacolas de 1,7 L, e porta-enxertos transplantados de tubetes de 75 mL para sacolas de polietileno de 1,7 e 4,5 L. Porta-enxertos produzidos diretamente em sacolas de 1,7 L atingem ponto ideal de subenxertia em menor tempo, de 100 a 150 dias após a semeadura, e permitem a obtenção de plantas maiores e com sistema radicular adequado, porém com custo de produção superior ao sistema de produção em tubetes de 290 mL.

scholarly journals Mudas de laranjeira 'valência' sobre dois porta-enxertos e sob diferentes manejos de adubação

2010 ◽  
Vol 32 (3) ◽  
pp. 855-864 ◽  
Author(s):  
Eduardo Augusto Girardi ◽  
Francisco de Assis Alves Mourão Filho ◽  
André Siqueira Rodrigues Alves
Keyword(s):  
Citrus Sinensis ◽  
Poncirus Trifoliata ◽  
Citrus Paradisi

O manejo da adubação é uma das principais práticas culturais para a produção de mudas cítricas em cultivo protegido. Avaliou-se o efeito de seis tipos de manejo das adubações comercialmente recomendadas na produção de mudas de laranjeira 'Valência' [Citrus sinensis (L.) Osbeck] enxertada sobre os porta-enxertos limoeiro 'Cravo' (Citrus limonia Osbeck) e citrumeleiro 'Swingle' [Citrus paradisi Macf. x Poncirus trifoliata (L.) Raf.]. As avaliações foram conduzidas a partir da transplantação dos porta-enxertos até 180 dias após a enxertia, em viveiro empresarial, em Conchal-SP. Os manejos corresponderam a duas soluções de fertilizantes solúveis aplicadas isoladamente, soluções de fertilizante solúveis associadas a fertilizante de liberação controlada e aplicação exclusiva de fertilizante de liberação controlada. O delineamento experimental adotado foi o fatorial 2 x 6 (porta-enxerto x manejo da adubação), em blocos casualizados, com três repetições e 12 mudas na parcela. O limoeiro 'Cravo' induziu maior crescimento ao enxerto. O crescimento vegetativo das mudas foi similar após o uso de fertilizantes solúveis ou de liberação controlada, apesar da grande variação de quantidades totais de nutrientes fornecidas às plantas. Desta forma, o viveirista poderá optar pelo manejo mais econômico ou prático, conforme as condições locais.

scholarly journals Performance of Minneola tangelo trees grafted over six rootstocks in Colombia Tropical Lowland (1997-2010)

2017 ◽  
Vol 66 (3) ◽  
pp. 397-402
Author(s):  
Hans Chaparro ◽  
David Ricardo Hernández ◽  
Diana Mayerly Mateus ◽  
Javier Orlando Orduz Rodriguez
Keyword(s):  
Fruit Quality ◽  
Citrus Sinensis ◽  
Productive Efficiency ◽  
Poncirus Trifoliata ◽  
Tree Size ◽  
The Other ◽  
Citrus Paradisi ◽  
Tropical Lowland ◽  
Citrus Orchards

‘Cleopatra’ tangerine (Citrus reshni hort. ex Tanaka) is a commonly used rootstock in the piedmont of Meta department, Colombia for establishing of commercial citrus orchards. Have allowed a late production entrance rootstock and produced big plants when grafted with tangelo ‘Minneola’ (C. reticulata Blanco x C. paradise Macf), decreasing the productive efficiency in plants and hard crop practices. The evaluated performance were as follows:  tree size, productive efficiency and fruit quality of tangelo ‘Minneola’ grafted in six rootstocks. It found that the cumulated production of 11 years was better with Citrumelo ‘Swingle’ (Citrus paradisi Macf. × Poncirus trifoliata (L.) Raf) with 1388.3 kg tree-1, followed by ‘Cleopatra’ (Citrus reshni hort. ex Tanaka) with 893.2 kg.tree-1, in last place was ‘Carrizo’ (Citrus sinensis Osb. × Poncirustrifoliata (L.) Raf) with 182.9 kg tree-1. The other rootstocks, had a medium production. The greatest height and canopy value, was found with ‘Cleopatra’ without significant differences with Citrumelo ‘Swingle’. In fruit quality no significant differences occurred.

scholarly journals Hesperidin and SARS-CoV-2: New Light on the Healthy Functions of Citrus Fruit

2020 ◽  
Author(s):  
Paolo Bellavite ◽  
Alberto Donzelli
Keyword(s):  
Immune System ◽  
Citrus Sinensis ◽  
Viral Infections ◽  
Citrus Fruit ◽  
Short Review ◽  
Citrus Fruits ◽  
Early Proteins ◽  
Main Protease ◽  
The Many

Among the many approaches to COVID-19 prevention, the possible role of diet has so far been somewhat marginal. Nutrition is very rich in substances with a potential beneficial effect on health and some of these could have an antiviral action or in any case be important in modulating the immune system and in defending cells from the oxidative stress associated with infection. This short review draws the attention on some components of Citrus fruits and especially of the orange (Citrus sinensis), well known for its vitamin content, but less for the function of its flavonoids. Among the latter, hesperidin has recently attracted the attention of researchers, because it binds to the key proteins of the SARS-CoV-2 virus. Several computational methods, independently applied by different researchers, showed that hesperidin has a low binding energy both with the coronavirus "spike" protein, and with the main protease that transforms the early proteins of the virus (pp1a and ppa1b) into the complex responsible for viral replication. The affinity of hesperidin for these proteins is comparable if not superior to that of common chemical antivirals. The preventive efficacy of vitamin C, at dosage attainable by diet, against viral infections is controversial, but recent reviews suggest that this substance may be useful in case of increased stress on the immune system. Finally, the reasons that suggest undertaking appropriate research on the Citrus fruits addition in the diet, as a complementary prevention and treatment of COVID-19, are discussed.

scholarly journals PENGARUH JENIS KEMASAN DAN TINGKAT KEMATANGAN TERHADAP KUALITAS BUAH JERUK SELAMA PENYIMPANAN

2017 ◽  
Vol 12 (2) ◽  
pp. 87
Author(s):  
Desy Nofriati ◽  
Nur Asni
Keyword(s):  
Weight Loss ◽  
Shelf Life ◽  
Factorial Design ◽  
Important Determinant ◽  
Citrus Fruit ◽  
Loss And Damage ◽  
Determinant Factor

<p>Packaging and maturity levels are considered to be two most important determinant factor that may affect of freshness the citrus during<br />storage. The objective of the study to find out the best type of packaging and maturity levels to weights loss and damage of product<br />during storage. The experimental used randomized factorial design that the maturity levels as the first factor and type of packaging<br />as the second factor and LSD analysis testing followed if there are significant differences among the treatment. The result indicates<br />that type of package and the maturity levels affected of citrus quality during storage. The Packaging with the ventilated cardboard box<br />and plastic crate are the best packing in protecting for citrus fruit and than prolong it shelf life for 16 days of storage. The over maturity<br />showed the higher weight loss value than green maturity and the optimum maturity levels.</p>

Sign in / Sign up

Export Citation Format

Share Document