An evaluation of the fruit quality and storage behaviour of Lane Late Navel oranges

1977 ◽  
Vol 17 (86) ◽  
pp. 515
Author(s):  
BM El-Zeftawi
Keyword(s):  
Fruit Quality ◽  
Acid Content ◽  
Citrus Sinensis ◽  
Sweet Orange ◽  
Storage Period ◽  
Fresh Fruit ◽  
Great Benefit ◽  
Citrus Industry ◽  
And Storage ◽  
Storage Disorders

Lane Late Navel (LLN) (Citrus sinensis), a late maturing orange cultivar, was evaluated for its quality and storage behaviour and compared with other sweet orange cultivars during 1972-75. Although LLN can extend the Navel season into the Valencia season, its quality deteriorates very rapidly; the juice becomes insipid due to its lower acid content and the rind re-greens, thus detracting from its appearance. It also granulates which reduces its acceptibility as fresh fruit. Granulation increases in storage and, combined with other storage disorders such as Alternaria citri, its storage period is limited to a mere six weeks at 5�C. The results indicate that the cultivar offers no great benefit to the citrus industry under conditions similar to this trial.

Effects of two reflective materials on gas exchange, yield, and fruit quality of sweet orange tree Citrus sinensis (L.) Osb.

2020 ◽  
Vol 118 ◽  
pp. 126071 ◽  
Author(s):  
Gregorio Gullo ◽  
Antonio Dattola ◽  
Vincenzo Vonella ◽  
Rocco Zappia
Keyword(s):  
Gas Exchange ◽  
Fruit Quality ◽  
Citrus Sinensis ◽  
Sweet Orange ◽  
Orange Tree

Mid-season sweet oranges for fresh and processing markets in Brazil

2021 ◽  
pp. 1-18
Author(s):  
Yuri Caires Ramos ◽  
André Luiz Fadel ◽  
Horst Bremer Neto ◽  
Marina Maitto Caputo ◽  
Eduardo Sanches Stuchi ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Test Performance ◽  
Management Practices ◽  
Sweet Orange ◽  
Fresh Fruit ◽  
Superior Performance ◽  
Juice Processing ◽  
Performance Indexes ◽  
Supplementary Irrigation ◽  
Standard Cultivar

Abstract Pera sweet orange (Citrus sinensis L. Osbeck) is the most important mid-season sweet orange cultivar in Brazil, not only because of its desirable fruit quality for both juice processing and the fresh fruit market, but also because there is a lack of adequate mid-season alternative sweet orange cultivars. This study aimed to evaluate the horticultural performance of other sweet oranges in an attempt to identify similar or superior selections to the standard cultivar, Pera IAC sweet orange. Seventeen sweet oranges selections, including the standard Pera IAC, were budded on Sunki mandarin [C. sunki (Hayata) hort. ex Tanaka]. The experiment was planted in 2007, using 12-month-old nursery trees, with 6.5 × 2.5 m spacing in the Southern region of São Paulo state, Brazil. The experimental orchard was maintained with standard commercial management practices, and without supplementary irrigation. Data collection started three years after planting and was carried out until seven years after the experiment had been installed. Vegetative growth, plant yield, fruit drop, fruit quality, and fruit maturation regressions were assessed. Averages of the alternative selections were compared with those of the standard cultivar by Dunnett test. Performance indexes were calculated in order to identify potential superior selections for the fresh fruit market and for juice processing. Results indicated significant differences among the selections evaluated when compared with the standard cultivar, suggesting better alternatives to be exploited. Five selections (Biondo, Finike, Pera Alexandre Maróstica, Seleta Rio, and Vaccaro Blood) offered superior performance in terms of attributes required for the fresh fruit market, while one selection (Pera Alexandre Maróstica) was superior for juice processing traits. These alternatives to Pera IAC represent an opportunity for more efficient and productive scions with higher fruit quality, and with a slight shift within the mid-season harvest time of sweet oranges in Brazil.

scholarly journals Influence of Commercial Packing and Storage on Navel Orange Flavor, Quality Constituents, and Juice Ethanol Concentration

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 989C-989
Author(s):  
David Obenland ◽  
Paul Neipp ◽  
Sue Collin ◽  
Jim Sievert ◽  
Kent Fjeld ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Ethanol Concentration ◽  
Influencing Factor ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Navel Orange ◽  
Flavor Quality ◽  
Citrus Industry ◽  
Packing Process ◽  
And Storage

It is commonly believed within the citrus industry that handling, waxing, and storage of navel oranges may have undesirable effects on flavor. However, the effect of each potential influencing factor under commercial conditions is not completely understood. The purpose of this study was to systematically investigate these potential influences on navel orange flavor. Navel oranges were harvested on two separate dates, using three grower lots per harvest date, and the fruit run on a commercial packing line. Fruit were sampled at four different stages of the packing process: in the field bin; after the washer; after the waxer; and after packing into standard cartons. Fruit quality, flavor, and juice ethanol concentration were evaluated immediately after sampling and following 3 and 6 weeks of storage at 5 °C. The overall hedonic score, a measure of flavor, significantly declined from 6.5 to 5.7, as a result of 6 weeks storage. Fruit selected from field bins, from after the washer, and after the waxer were all judged by the taste panel to be equivalent in flavor. The packed fruit were judged to be slightly inferior in flavor. Titratable acidity declined while soluble solids increased as a result of storage; the stage of the packing process influenced neither. Waxing and storage both were associated with higher ethanol levels in the fruit.

scholarly journals Changes in benzoic acid content of goat milk kefir produced using different kefir cultures

Mljekarstvo ◽  
2020 ◽  
Vol 71 (1) ◽  
pp. 60-68
Author(s):  
Gizem Şendoğan ◽  
Keyword(s):  
Benzoic Acid ◽  
Acid Content ◽  
Hippuric Acid ◽  
Goat Milk ◽  
Storage Period ◽  
Research Results ◽  
Milk Samples ◽  
Kefir Grain ◽  
And Storage

In this study, the content of hippuric and benzoic acid of goat milk kefir produced with commercial lyophilized kefir cultures and kefir grain was investigated. 9 commercial kefir culture and 1 kefir grain were used in production of goat milk kefir. Based on the obtained results, hippuric acid was not found in kefir samples during the storage period, whereas goat milk samples contained hippuric acid (14.8 mg/kg). Benzoic acid levels of kefir samples ranged from 8.5 to 26.6 mg/kg during the 28-day storage period. The highest Lactobacillus and Lactococcus counts were observed in kefir sample produced with kefir grain while this sample was one of the sample containing the lowest (11.2 mg/kg) benzoic acid levels. In conclusion, the research results showed that starter kefir cultures and microbiota used in kefir production and storage period had a significant effect on the formation of benzoic acid levels (p<0.05).

scholarly journals Citrus Scion and Rootstock, Topping Height, and Tree Spacing Affect Tree Size, Yield, Fruit Quality, and Economic Return

1995 ◽  
Vol 120 (5) ◽  
pp. 861-870 ◽  
Author(s):  
T.A. Wheaton ◽  
J.D. Whitney ◽  
W.S. Castle ◽  
R.P. Muraro ◽  
H.W. Browning ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Citrus Sinensis ◽  
Sweet Orange ◽  
Tree Density ◽  
Early Years ◽  
Poncirus Trifoliata ◽  
Factorial Experiment ◽  
Economic Returns ◽  
Economic Return

A factorial experiment begun in 1980 included `Hamlin' and `Valencia' sweet-orange scions [Citrus sinensis (L.) Osb.], and Milam lemon (C. jambhiri Lush) and Rusk citrange [C. sinensis × Poncirus trifoliata (L.) Raf.] rootstocks, tree topping heights of 3.7 and 5.5 m, between-row spacings of 4.5 and 6.0 m, and in-row spacings of 2.5 and 4.5 m. The spacing combinations provided tree densities of 370, 494, 667, and 889 trees ha. Yield increased with increasing tree density during the early years of production. For tree ages 9 to 13 years, however, there was no consistent relationship between yield and tree density. Rusk citrange, a rootstock of moderate vigor, produced smaller trees and better yield, fruit quality, and economic returns than Milam lemon, a vigorous rootstock. After filling their allocated space, yield and fruit quality of trees on Milam rootstock declined with increasing tree density at the lower topping height. Cumulative economic returns at year 13 were not related to tree density.

Magnesium influences on the fruit quality of sweet orange (Citrus sinensis L. osbeck)

1974 ◽  
Vol 41 (1) ◽  
pp. 103-112 ◽  
Author(s):  
G. I. Moss ◽  
M. L. Higgins
Keyword(s):  
Fruit Quality ◽  
Citrus Sinensis ◽  
Sweet Orange
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