USING ALOE VERA AS A PREHARVEST TREATMENT TO MAINTAIN POSTHARVEST ORGANIC TABLE GRAPE QUALITY

2012 ◽  
pp. 621-625 ◽  
Author(s):  
S. Castillo ◽  
D. Navarro ◽  
P.J. Zapata ◽  
F. Guillén ◽  
D. Valero ◽  
...  
Keyword(s):  
Aloe Vera ◽  
Table Grape ◽  
Grape Quality

Antifungal efficacy of Aloe vera in vitro and its use as a preharvest treatment to maintain postharvest table grape quality

2010 ◽  
Vol 57 (3) ◽  
pp. 183-188 ◽  
Author(s):  
S. Castillo ◽  
D. Navarro ◽  
P.J. Zapata ◽  
F. Guillén ◽  
D. Valero ◽  
...  
Keyword(s):  
Aloe Vera ◽  
Table Grape ◽  
Grape Quality ◽  
Antifungal Efficacy

scholarly journals Fluorescence-Sensor Mapping for the in Vineyard Non-Destructive Assessment of Crimson Seedless Table Grape Quality

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 983
Author(s):  
Lorenza Tuccio ◽  
Lucia Cavigli ◽  
Francesca Rossi ◽  
Olga Dichala ◽  
Fotis Katsogiannos ◽  
...  
Keyword(s):  
Table Grape ◽  
Fluorescence Sensor ◽  
High Yield ◽  
New Approach ◽  
East Central ◽  
Mean Values ◽  
Grape Quality ◽  
Non Destructive ◽  
North And South

Non-destructive tools for the in situ evaluation of vine fruit quality and vineyard management can improve the market value of table grape. We proposed a new approach based on a portable fluorescence sensor to map the ripening level of Crimson Seedless table grape in five different plots in the East, Central-North and South of the Macedonia Region of Greece. The sensor provided indices of ripening and color such as SFRR and ANTHRG correlated to the chlorophyll and anthocyanin berry contents, respectively. The mean ANTHRG index was significantly different among all the plots examined due to the occurrence of different environmental conditions and/or asynchronous ripening processes. The indices presented moderate, poor in some cases, spatial variability, probably due to a significant vine-to-vine, intra-vine and intra-bunch variability. The cluster analysis was applied to the plot with the most evident spatial structure (at Kilkis). Krigged maps of the SFRR, ANTHRG and yield were classified by k-means clustering in two-zones that differed significantly in their mean values. ANTHRG and SFRR were inversely correlated over 64% of the plot. SFRR appeared to be a potential useful proxy of yield since it was directly correlated to yield over 66% of the plot. The grape color (ANTHRG) was slightly higher over the low-yield zones with respect to the high-yield zones. Our study showed that the combination of anthocyanins and chlorophyll indices detected in the field on Crimson Seedless table grape by a portable fluorescence sensor can help in defining the best harvest time and the best areas for harvesting.

Novel Edible Coating Based onAloe veraGel To Maintain Table Grape Quality and Safety

2005 ◽  
Vol 53 (20) ◽  
pp. 7807-7813 ◽  
Author(s):  
Juan Miguel Valverde ◽  
Daniel Valero ◽  
Domingo Martínez-Romero ◽  
Fabián Guillén ◽  
Salvador Castillo ◽  
...  
Keyword(s):  
Table Grape ◽  
Edible Coating ◽  
Quality And Safety ◽  
Grape Quality

scholarly journals Cover Crop for a Sustainable Viticulture: Effects on Soil Properties and Table Grape Production

Agronomy ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1334 ◽  
Author(s):  
Concetta Eliana Gattullo ◽  
Giuseppe Natale Mezzapesa ◽  
Anna Maria Stellacci ◽  
Giuseppe Ferrara ◽  
Giuliana Occhiogrosso ◽  
...  
Keyword(s):  
Soil Quality ◽  
Cover Crops ◽  
Cover Crop ◽  
Conventional Tillage ◽  
Table Grape ◽  
Microbial Biomass C ◽  
Yield Reduction ◽  
Total N ◽  
Organic C ◽  
Grape Quality

Cover crops are increasingly adopted in viticulture to enhance soil quality and balance the vegetative and reproductive growth of vines. Nevertheless, this sustainable practice has been only recently used for table grape viticulture, with results often contrasting. The aim of this study was to assess the effect of a fescue (Festucaarundinacea Schreb.) cover crop on soil quality, yield, and grape qualitative parameters in a table grape vineyard (cv “Italia”) located in southern Italy, comparing results with the conventional tillage. Soil organic carbon (C), total nitrogen (N), microbial biomass C (MBC), β-glucosidase (BGLU) and alkaline phosphomonoesterase (APME) activities were assessed during three growing seasons (2012–2014) and three phenological stages. The trend of soil chemical and microbiological properties was jointly influenced by the soil management system, growing season and phenological stage. Compared to conventional tillage, cover crops increased, on average, soil organic C, total N, MBC, BGLU and APME by 136%, 93%, 112%, 100% and 62%, respectively. Slight or no effects of cover crops were observed on grape quality and yield, except for 2012 (the driest season), when a yield reduction occurred. This study reveals that cover crops strongly enhance soil quality in the short-term, with potential advantages for grape production in the long-term.

scholarly journals Performance Evaluation of Two Commercially Available Portable Spectrometers to Non-Invasively Determine Table Grape and Peach Quality Attributes

Agronomy ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 148 ◽  
Author(s):  
Irwin R. Donis-González ◽  
Constantino Valero ◽  
Md Abdul Momin ◽  
Amanjot Kaur ◽  
David C. Slaughter
Keyword(s):  
Prediction Models ◽  
Quality Attributes ◽  
Table Grape ◽  
Partial Least Square ◽  
Least Square ◽  
Partial Least Square Regression ◽  
Soluble Solids ◽  
Grape Quality ◽  
Portable Spectrometers ◽  
Spectrometer Data

Near-infrared (NIR) spectroscopy has been used to non-destructively and rapidly evaluate the quality of fresh agricultural produce. In this study, two commercially available portable spectrometers (F-750: Felix Instruments, WA, USA; and SCiO: Consumer Physics, Tel Aviv, Israel) were evaluated in the wavelength range between 740 and 1070 nm to non-invasively predict quality attributes, including the dry matter (DM), and total soluble solids (TSS) content of three fresh table grape cultivars (‘Autumn Royal’, ‘Timpson’, and ‘Sweet Scarlet’) and one peach cultivar (‘Cassie’). Prediction models were developed using partial least-square regression (PLSR) to correlate the NIR absorbance spectra with the invasive quality measurements. In regard to grapes, the best DM prediction models yielded an R2 of 0.83 and 0.81, a ratio of standard error of performance to standard deviation (RPD) of 2.35 and 2.29, and a root mean square error of prediction (RMSEP) of 1.40 and 1.44; and the best TSS prediction models generated an R2 of 0.97 and 0.95, an RPD of 5.95 and 4.48, and an RMSEP of 0.53 and 0.70 for the F-750 and SCiO spectrometers, respectively. Overall, PLSR prediction models using both spectrometers were promising to predict table grape quality attributes. Regarding peach, the PLSR prediction models did not perform as well as in grapes, as DM prediction models resulted in an R2 of 0.81 and 0.67, an RPD of 2.24 and 1.74, and an RMSEP of 1.28 and 1.66; and TSS resulted in an R2 of 0.62 and 0.55, an RPD of 1.55 and 1.48, and an RMSEP of 1.19 and 1.25 for the F-750 and SCiO spectrometers, respectively. Overall, the F-750 spectrometer prediction models performed better than those generated by using the SCiO spectrometer data.

scholarly journals Cluster ions to preserve ready-to-eat table grape during cold storage

Food Research ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 49-56
Author(s):  
V. Chiabrando ◽  
G. Giacalone
Keyword(s):  
Skin Color ◽  
Table Grape ◽  
Soluble Solids ◽  
Cluster Ions ◽  
Air Purification ◽  
Post Harvest ◽  
Weight Losses ◽  
Color Retention ◽  
Grape Quality ◽  
Fresh Cut

The demand for natural fresh-cut products characterized by high quality has promoted the research for non-chemical post-harvest treatments. The aim of this study was to evaluate the effect of air purification with the ion generator Ionny® (Fruit control Equipment, Italy) on fresh-cut table grape quality during post-harvest storage. The air purification was the effect of positively and negatively charged ions generated by the ion generator at atmospheric pressure. The treatment was applied in a storage room on fresh-cut table grape at 0°C for 21 days. Berries were analyzed for weight loss, flesh firmness, skin color, total phenols, acidity, total soluble solids, vitamin C and total yeasts/molds. Results showed that ions treatment positively influenced the quality maintenance of the product, by improving color retention, limiting weight losses and preserving high phenolic content during postharvest storage. Moreover, in cv Red Globe treated berries showed higher soluble solids, acidity, lightness and lower firmness losses, while in cv Italia the ions treatment limited the growth of the microorganisms.

scholarly journals Vineyard protection with rain-shelter: relationships between radiometric properties of plastic covers and table grape quality

2019 ◽  
Vol 13 ◽  
pp. 04007
Author(s):  
Laura de Palma ◽  
Patrizio Limosani ◽  
lva Marasovic ◽  
Sandra Pati ◽  
Giuliano Vox ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Air Temperature ◽  
Southern Italy ◽  
Water Status ◽  
Skin Resistance ◽  
Table Grape ◽  
Berry Skin ◽  
Grape Quality ◽  
New Type ◽  
Heavy Rainfalls

The rise of unpredictable, heavy rainfalls increases incidence of diseases, berry rot, berry cracking, and enhance the need for rain shelters. The influence of the type of rain shelter on microclimate and grape quality is still little explored. The aim of this trial was to investigate the radiometric properties of a new type of cover, its effect on vineyard microclimate and on table grape quality, as compared with a reference cover, during a vintage with unusually abundant precipitation for Southern Italy. The new cover was characterized by lower transmissivity to IRshort radiation, and by a very higher transmissivity to UV radiation. It showed a tendency to decrease air temperature by 1 °C, increase RH by 2–3%, reduce VPD, and improve vine water status with respect to the reference. At harvest, grapes covered with the new sheet had higher TSS concentration, TSS / TA ratio, total skin polyphenol and flavonoids content, and berry skin resistance to rupture. Those berries, moreover, increased the level of volatile compounds such as linalool, typical of ‘Italia’ muscat aroma, and terpineol.

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