Shipping container equipped with controlled atmosphere: Case study on table grape

A prototype of shipping container equipped with controlled atmosphere (CA) system (CA-prototype), was used for the simulation of the cold transport of table grapes (cv Italia). The CAprototype was realised by IFAC SPA, within the Research Project Continnova. It is equipped with a cooling system in order to work at a temperature between –20°C and +15°C. The CA management is realised through the control system and the connections with the remote application. The experimental simulation of the cold transport was realised putting 20 boxes of table grapes inside the CA-prototype (set at 20% O2 + 10% CO2 in nitrogen), other 20 in a refrigerated room using a SO2 pad inside each box, the remaining 20 in a cold room (Control) without SO2 pad for 12 days at 5°C. At the end of the simulated transport, for each postharvest solution, 10 table grapes boxes were analysed, while the remaining 10 were stored for 3 days at 20°C in air with the aim to simulate a shelf-life period. CA-prototype allows preserving table grapes visual quality, delaying browning and maintaining berry turgidity, extending the shelf-life until 12 days at 5°C. Finally, CA-prototype resulted a valid alternative to the commonly used SO2 pads, which are under constant revision because of its potential allergenic effects.

Download Full-text

Development of Performance Evaluation Indicators for Table Grape Packaging Units

Sustainability ◽

10.3390/su13042177 ◽

2021 ◽

Vol 13 (4) ◽

pp. 2177

Author(s):

Edson Kogachi ◽

Adonias Ferreira ◽

Carlos Cavalcante ◽

Marcelo Embiruçu

Keyword(s):

Performance Evaluation ◽

Standard Deviation ◽

Process Management ◽

Principal Component ◽

Table Grape ◽

Data Envelopment ◽

Table Grapes ◽

Speed Performance ◽

The Cost

In order to improve the process management of table grape packaging, its performance should be evaluated. However, the literature on performance evaluation indicators is scarce. To address this research gap, we propose a method for the development of performance evaluation indicators for table grape packaging units, which are characterized by labor-intensive and highly seasonal production processes in the agro-economic sector. The stages include the following: contextualizing table grape packaging units, selecting the performance objectives, selecting techniques to be used in the development of the indicators, and applying the method to the packaging units of table grapes. The techniques adopted in the development of the indicators aimed at the cost, quality, flexibility, reliability, and speed performance objectives were data envelopment analysis, principal component analysis, quantification of the batch, compliance with the program within the established deadline, and measurement of the execution time of the batch, respectively. The results obtained in the case study demonstrate that the correlations between the performance indicators do not indicate the need to disregard any of them. Furthermore, the standard deviation values for each indicator are similar. Thus, both results of correlations and standard deviation confirm the importance of the indicators chosen for the performance evaluation of table grape packaging.

Download Full-text

EXPERIMENTAL SIMULATION OF A HELIUM COOLING SYSTEM FOR A SUPERCONDUCTING GENERATOR

Le Journal de Physique Colloques ◽

10.1051/jphyscol:19841149 ◽

1984 ◽

Vol 45 (C1) ◽

pp. C1-729-C1-732 ◽

Cited By ~ 2

Author(s):

L. Intichar ◽

C. Schnapper

Keyword(s):

Cooling System ◽

Experimental Simulation

Download Full-text

Salicylic acid and oxalic acid in enhancing the quality and extending the shelf life of grape cv. Thompson seedless

Food Science and Technology International ◽

10.1177/10820132211020612 ◽

2021 ◽

pp. 108201322110206

Author(s):

TK Hazarika ◽

Tangkasil Marak

Keyword(s):

Salicylic Acid ◽

Oxalic Acid ◽

Shelf Life ◽

Titratable Acidity ◽

Ethylene Biosynthesis ◽

Fungal Decay ◽

Grape Berries ◽

Overall Acceptability ◽

Table Grapes ◽

Acid Ratio

Postharvest life of table grapes is usually shortened by berry softening, berry drop, stem browning, fungal decay. Salicylic acid reduces fruit respiration and ethylene biosynthesis, during storage of fruits. Similarly, application of oxalic acid is a secure and hopeful postharvest handling technology for keeping quality and prolonging storage life of fruit. To study the effect of Salicylic acid and oxalic acid in enhancing the quality and extending the shelf life of grape, the present investigation was conducted. The grape berries were treated with Oxalic acid (OA) (1, 2, 3, 4, and 5 mM) and Salicylic acid (SA) (0.5, 1, 1.5 and 2 mM). The treatments were compared within 16th days at an interval of 4 days. Among the treatments, SA (2 mM) showed superiority in different quality attributing characters like physiological loss in weight (PLW), berry firmness, rachis browning, berry appearance, fungal decay, berry shattering, TSS, ascorbic acid, titratable acidity, total sugars, reducing sugars, TSS: acid ratio, taste, overall acceptability and shelf life. Hence, SA (2 mM) can be used as an effective strategy for maintaining quality of table grapes.

Download Full-text

UNDERSTANDING THE EMBEDDED CARBON CHALLENGES OF BUILDING SERVICE SYSTEMS

Proceedings of the Design Society ◽

10.1017/pds.2021.589 ◽

2021 ◽

Vol 1 ◽

pp. 3279-3288

Author(s):

Maria Hein ◽

Darren Anthony Jones ◽

Claudia Margot Eckert

Keyword(s):

Energy Use ◽

Cooling System ◽

Current System ◽

Energy Performance ◽

Service Systems ◽

Carbon Footprints ◽

Embodied Carbon ◽

Study Results ◽

Operational Energy

AbstractEnergy consumed in buildings is a main contributor to CO2 emissions, there is therefore a need to improve the energy performance of buildings, particularly commercial buildings whereby building service systems are often substantially over-designed due to the application of excess margins during the design process.The cooling system of an NHS Hospital was studied and modelled in order to identify if the system was overdesigned, and to quantify the oversizing impact on the system operational and embodied carbon footprints. Looking at the operational energy use and environmental performance of the current system as well as an alternative optimised system through appropriate modelling and calculation, the case study results indicate significant environmental impacts are caused by the oversizing of cooling system.The study also established that it is currently more difficult to obtain an estimate of the embodied carbon footprint of building service systems. It is therefore the responsibility of the machine builders to provide information and data relating to the embodied carbon of their products, which in the longer term, this is likely to become a standard industry requirement.

Download Full-text

In vitro and in vivo application of active compounds with anti-yeast activity to improve the shelf life of ready-to-eat table grape

World Journal of Microbiology and Biotechnology ◽

10.1007/s11274-013-1271-y ◽

2013 ◽

Vol 29 (6) ◽

pp. 1075-1084 ◽

Cited By ~ 8

Author(s):

Costa Cristina ◽

Lucera Annalisa ◽

Conte Amalia ◽

Contò Francesco ◽

Matteo Alessandro Del Nobile

Keyword(s):

Shelf Life ◽

Table Grape ◽

Active Compounds

Download Full-text

Modeling the Microbiological Shelf Life of Table Grapes and Evaluating the Effects of Constant Concentrations of Sulfur Dioxide

Journal of Food Processing and Preservation ◽

10.1111/jfpp.13058 ◽

2016 ◽

Vol 41 (4) ◽

pp. e13058

Author(s):

Xiaoyu Chen ◽

Zhiqiang Zhu ◽

Xiaoshuan Zhang ◽

Arina Oana Antoce ◽

Weisong Mu

Keyword(s):

Sulfur Dioxide ◽

Shelf Life ◽

Table Grapes

Download Full-text

Genetic diversity in table grapes based on RAPD and microsatellite markers

Pesquisa Agropecuária Brasileira ◽

10.1590/s0100-204x2011000900010 ◽

2011 ◽

Vol 46 (9) ◽

pp. 1035-1044 ◽

Cited By ~ 9

Author(s):

Patrícia Coelho de Souza Leão ◽

Sérgio Yoshimitsu Motoike

Keyword(s):

Genetic Diversity ◽

Microsatellite Markers ◽

Genetic Relationships ◽

Similarity Index ◽

Genetic Distances ◽

Table Grape ◽

Group Method ◽

Molecular Characteristics ◽

Table Grapes ◽

Pair Group

The objective of this work was to analyze the genetic diversity of 47 table grape accessions, from the grapevine germplasm bank of Embrapa Semiárido, using 20 RAPD and seven microsatellite markers. Genetic distances between pairs of accessions were obtained based on Jaccard's similarity index for RAPD data and on the arithmetic complement of the weighted index for microsatellite data. The groups were formed according to the Tocher's cluster analysis and to the unweighted pair‑group method with arithmetic mean (UPGMA). The microsatellite markers were more efficient than the RAPD ones in the identification of genetic relationships. Information on the genetic distance, based on molecular characteristics and coupled with the cultivar agronomic performance, allowed for the recommendation of parents for crossings, in order to obtain superior hybrids in segregating populations for the table grape breeding program of Embrapa Semiárido.

Download Full-text

Cyanamide advances the maturity of table grapes in central Australia

Australian Journal of Experimental Agriculture ◽

10.1071/ea9860505 ◽

1986 ◽

Vol 26 (4) ◽

pp. 505 ◽

Cited By ~ 10

Author(s):

CR McColl

Keyword(s):

Fruit Ripening ◽

Slow Growth ◽

Frost Damage ◽

Table Grape ◽

Table Grapes ◽

Central Australia

In the hot subtropical desert of Central Australia, a 25 mg/ml cyanamide solution was applied to Sultana H4 and Cardinal grape vines immediately after pruning on 2 May, 30 May, 27 June or 25 July, 16, 12, 8 and 4 weeks prior to the usual time of budburst, about 22 August. Both cultivars responded to cyanamide, the vines bursting bud 2-4 weeks after application. Vines treated on 2 May and 30 May suffered frost damage and produced negligible crops; those treated on 27 June and 25 July flowered significantly earlier than untreated vines, despite slow growth in July and August. Fruit ripening in Sultana H4 was advanced by 4, 3 and 2 weeks by cyanamide applications on 30 May, 27 June and 25 July, respectively. Ripening in Cardinal was advanced by 3.5 and 2.5 weeks by cyanamide applications on 27 June and 25 July, respectively. The ability to advance maturity has significant implications for commercial table-grape production in the region.

Download Full-text