scholarly journals Effect of Vacuum Packaging on Quality of Pomegranate Arils during Storage

2020 ◽  
pp. 40-46
Author(s):  
Alice P. Sujeetha ◽  
R. Meenatchi ◽  
Paulin Patricia ◽  
Aditi Negi
Keyword(s):  
Physicochemical Properties ◽  
Shelf Life ◽  
Enzymatic Reaction ◽  
Consumer Preference ◽  
Vacuum Packaging ◽  
Soluble Solids ◽  
Anthocyanin Content ◽  
Total Anthocyanin ◽  
Quality Deterioration ◽  
Pomegranate Arils

Development of advanced lifestyle increased consumer preference towards preservative free, nutrient rich and ready to eat fresh fruits. Vacuum packaging increases shelf life of fresh produce, reduces quality deterioration by preventing from aerobic spoilage. Safety and quality assurance of packaged fruits/fruit products has concerns world-wide due to quality deterioration and increase in endogenous enzymatic reaction during storage. Minimally processed, ready to eat pomegranate arils are in great demand that satisfy the consumer requirements such as convenient, freshly available, healthy food, and saves time and labor. This study aims to extend the shelf life of pomegranate arils (Punica granatum L.) by vacuum packaging. Two different packaging materials such as LDPE and HDPE were used and the vacuum packed arils were stored under ambient and refrigerated conditions. The quality changes & physicochemical properties such as colour, physical weight loss, firmness, pH, titratable acidity, total soluble solids, total anthocyanin content and microbial load were analyzed. Results indicated that the shelf life of normally packed pomegranate arils were up to 8 days whereas vacuum packed arils were extended to 22 days under refrigerated condition. HDPE has minimal effect on physicochemical properties of arils as compared to LDPE.

scholarly journals Effect of gum arabic (Acacia senegal) addition on physicochemical properties and sensory acceptability of roselle juice

Food Research ◽  
2019 ◽  
Vol 4 (2) ◽  
pp. 449-458
Author(s):  
T.N.N. Tuan Azlan ◽  
Yusnita Hamzah ◽  
H.A. Mohd Abd Majid
Keyword(s):  
Physicochemical Properties ◽  
Gum Arabic ◽  
Soluble Solids ◽  
Anthocyanin Content ◽  
Acacia Senegal ◽  
Total Anthocyanin ◽  
Total Soluble Solids ◽  
Sensory Acceptability ◽  
Total Anthocyanin Content ◽  
Significant Difference

Roselle has a brilliant red colour, high in vitamins and has a unique flavour that makes it suitable for juice production. Meanwhile, Gum Arabic (GA) is the edible dried exudate attained from stem and branch of Acacia senegal that contains high dietary fibre which can serve as prebiotic. Therefore, the application of GA into roselle juice might promote health benefits to consumers. GA is categorised as hydrocolloid and its application might affect important properties and acceptability towards the product. Hence, this study was conducted to investigate the effect of different concentrations of Gum Arabic (GA, Acacia senegal) addition (0%, 2%, 4% and 6%) on physicochemical properties and sensory acceptability of roselle juice. Increasing the GA concentration resulted in increased pH, total soluble solids, viscosity and turbidity values of roselle juice (p<0.05). However, the addition of GA had reduced the total anthocyanin content in roselle juice. For colour analysis, the addition of GA significantly (p<0.05) reduced the redness (a*) and yellowness (b*) properties. There was no significant difference in all attributes for sensory evaluation except for colour attribute. In conclusion, the addition of GA up to 6% into roselle juice caused an increase in pH, total soluble solids, viscosity and turbidity, but no effect to the sensory attributes.

scholarly journals Proximate Composition and Bioactive Compounds in Diverse Eggplant Genotypes

2020 ◽  
pp. 113-121
Author(s):  
Vishwanath Bidaramali ◽  
Shirin Akhtar ◽  
Anupam Das
Keyword(s):  
Bioactive Compounds ◽  
Radical Scavenging Activity ◽  
Sugar Content ◽  
Radical Scavenging ◽  
Consumer Preference ◽  
Dry Weight ◽  
Weight Basis ◽  
Soluble Solids ◽  
Anthocyanin Content ◽  
Total Anthocyanin

Eggplant (Solanum melongena L.) is an important solanaceous crop of tropics and sub-tropics, having high production potential, and also a rich source of nutrients, particularly, carbohydrates, proteins, dietary fibre and vitamins like thiamin, niacin, pantothenic acid and folic acid, minerals like calcium, iron, potash, zinc, copper and manganese as well as bioactive compounds. However, eggplant is available in diverse shape and colour and consumer preference varies and the nutrient composition is different. In this investigation, we worked out the proximate nutrient compounds (on dry weight basis) and the bioactive compounds (on a fresh weight basis) in twenty diverse eggplant genotypes varying in colour and shape.  Moisture content in the fruits ranged from 71.54 to 91.36%, while carbohydrate content from 2.80 to 6.82%, crude protein 16.98 to 31.85%, nitrogen 2.49 to 4.35%, phosphorous 0.29 to 0.51%, potassium 1.65 to 4.54%, calcium 0.83 to 0.35%, iron 106.21 to 235.34 mg/kg, manganese 89.01 to 245.54 mg/kg, copper 18.73 to 98.56 mg/kg and zinc 60.73 to 75.77 mg/kg, each on dry weight basis. Biochemical parameters like total soluble solids (TSS) ranged from 1.27 to 3.94 °Brix, total sugar content 2.26 to 4.65%, ascorbic acid 0.66 to 3.53 mg/100 g, total anthocyanin content 0.35 to 18.85 mg/100 g FW, total chlorophyll 0.11 to 2.70 mg/100 g FW, total phenol 1.03 to 15.65 mg catechol equivalent/100 g FW, total antioxidant 1.16 to 2.26 µmol Trolox equivalent/g FW and radical scavenging activity 50.52 to 96.48%. Proximate nutrients were highest in Pusa Uttam, Pant Rituraj and BRBL-01, quality parameters in BRBL-07 and 71-19, while bioactive compounds were highest in Pant Rituraj, Pusa Purple Long, Pusa Purple Cluster and BRBL-01. These genotypes may be utilized in future breeding programmes for developing effective and nutritive cultivars.

scholarly journals Evaluation of Biochemical Juice Attributes and Color-Related Traits in Muscadine Grape Population

Foods ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1101
Author(s):  
Jiovan Campbell ◽  
Ali Sarkhosh ◽  
Fariborz Habibi ◽  
Pranavkumar Gajjar ◽  
Ahmed Ismail ◽  
...  
Keyword(s):  
Principal Component ◽  
Titratable Acidity ◽  
Positive Influence ◽  
Biochemical Properties ◽  
Soluble Solids ◽  
Matrix Analysis ◽  
Anthocyanin Content ◽  
Total Anthocyanin ◽  
Color Characteristics ◽  
Muscadine Grape

Biochemical juice attributes and color-related traits of muscadine grape genotypes have been investigated. For this study, 90 muscadine genotypes, including 21 standard cultivars, 60 breeding lines, and 9 Vitis x Muscadinia hybrids (VM), were evaluated. The biochemical properties of total soluble solids (TSS), titratable acidity, and TSS/Acid (T/A) ratio showed modest diversity among genotypes with a range of 10.3 °Brix, 2.1 mg tartaric acid/L, and 4.6, respectively. Nonetheless, the pH trait exhibited a tight range of 0.74 among the population with a minimum and maximum pH of 3.11 ± 0.12 and 3.85 ± 0.12. Color-related traits showed more deviation between individuals. Total anthocyanin content (TAC), luminosity index (L*), hue angle (h°), and chroma index (C*) displayed a range of 398 µg/g DW, 33.2, 352.1, and 24, respectively. The hierarchical clustering map classified the population into two large groups of colored and non-colored grapes based on L* and h°, suggesting the predominance of these two characters among the population. The colored berries genotypes clade was further divided into several sub-clades depending on C*, TAC, and TSS levels. The principal component analysis (PCA) separated the four-color characteristics into two groups with a negative correlation between them, L* and C* versus TAC and h°. Further, PCA suggested the positive influence of acidity in enhancing the different nutraceutical components. Despite the nature of anthocyanins as a member of phenolic compounds, a lack of significant correlation between TAC and nutraceutical-related traits was detected. The dissimilatory matrix analysis highlighted the muscadine individuals C11-2-2, E16-9-1, O21-13-1, and Noble as particular genotypes among the population due to enhanced color characteristics.

scholarly journals Effect of Freeze Crystallization on Quality Properties of Two Endemic Patagonian Berries Juices: Murta (Ugni molinae) and Arrayan (Luma apiculata)

Foods ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 466
Author(s):  
María Guerra-Valle ◽  
Siegried Lillo-Perez ◽  
Guillermo Petzold ◽  
Patricio Orellana-Palma
Keyword(s):  
Process Parameters ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Flavonoid Content ◽  
Total Polyphenol ◽  
Total Anthocyanin ◽  
Quality Properties ◽  
Total Anthocyanin Content ◽  
Ugni Molinae

This work studied the effects of centrifugal block freeze crystallization (CBFC) on physicochemical parameters, total phenolic compound content (TPCC), antioxidant activity (AA), and process parameters applied to fresh murta and arrayan juices. In the last cycle, for fresh murta and arrayan juices, the total soluble solids (TSS) showed values close to 48 and 54 Brix, and TPCC exhibited values of approximately 20 and 66 mg gallic acid equivalents/100 grams dry matter (d.m.) for total polyphenol content, 13 and 25 mg cyanidin-3-glucoside equivalents/100 grams d.m. for total anthocyanin content, and 9 and 17 mg quercetin equivalents/100 grams d.m. for total flavonoid content, respectively. Moreover, the TPCC retention indicated values over 78% for murta juice, and 82% for arrayan juice. Similarly, the AA presented an increase over 2.1 times in relation to the correspondent initial AA value. Thus, the process parameters values were between 69% and 85% for efficiency, 70% and 88% for percentage of concentrate, and 0.72% and 0.88 (kg solutes/kg initial solutes) for solute yield. Therefore, this work provides insight about CBFC on valuable properties in fresh Patagonian berries juices, for future applications in health and industrial scale.

scholarly journals Survival Analysis to Predict How Color Influences the Shelf Life of Strawberry Leather

Foods ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 218
Author(s):  
Raquel da Silva Simão ◽  
Jaqueline Oliveira de de Moraes ◽  
Julia Beims Lopes ◽  
Ana Caroline Cichella Frabetti ◽  
Bruno Augusto Mattar Carciofi ◽  
...  
Keyword(s):  
Survival Analysis ◽  
Shelf Life ◽  
Color Change ◽  
Light Emitting Diode ◽  
Storage Conditions ◽  
Quality Parameter ◽  
Current Status ◽  
Anthocyanin Content ◽  
Total Anthocyanin ◽  
Color Changes

Color change of fruit-based products during storage is an important quality parameter to determine their shelf life. In this study, a combination of relative humidity (RH) and illumination was evaluated on the stability of strawberry leathers. Samples were conditioned at 25 °C, in chambers with RH of 22.5% and 52.3% and under two levels of illumination (no illumination and with a light-emitting diode (LED) illumination at 1010 lx). Samples were analyzed during storage by instrumental color measurements, total anthocyanin content, and consumers’ acceptance/rejection of the product color. Current-status survival analysis was performed to estimate the sensory-based shelf-life of the strawberry leather. The chromatic parameters (a* and ΔE* values) and anthocyanin content changed with increasing storage time and RH, fitting a first-order fractional conversion model. Samples conditioned at the higher RH showed a higher reduction of a* values and anthocyanins losses when stored under LED illumination than those without illumination. The increase of RH resulted in a faster increase of the consumer rejection probability and a shorter shelf life of the strawberry leather. For 50% of consumers’ rejection, the sensory shelf life of the strawberry leather equilibrated at 22.5% RH was estimated as at least 54 days, while it was reduced to approximately 2 days at 52.3% RH. The red chromatic parameter (a* value) strongly correlated to the percentage of consumer rejection in all storage conditions, suggesting that this analytical parameter can be useful as a predictor of strawberry leather’s shelf life. Therefore, the results of this study show the applicability of an approach that integrates instrumental and sensory data to acquire faster information on color changes during the storage of strawberry leather and product shelf-life prediction.

scholarly journals INFLUENCE OF IRRIGATION STRATEGIES ON THE PHYSICOCHEMICAL PROPERTIES OF ‘SYRAH’ WINE PRODUCED IN SÃO FRANCISCO VALLEY

Irriga ◽  
2018 ◽  
Vol 23 (4) ◽  
pp. 818-834 ◽  
Author(s):  
Vanessa De Souza Oliveira ◽  
Giuliano Elias Pereira ◽  
Augusto Miguel Nascimento Lima ◽  
Alessandra Monteiro Salviano ◽  
Russaika Lirio Nascimento ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Vitis Vinifera ◽  
Deficit Irrigation ◽  
Vitis Vinifera L ◽  
Anthocyanin Content ◽  
Regulated Deficit Irrigation ◽  
Total Anthocyanin ◽  
Volatile Acidity ◽  
Total Anthocyanin Content ◽  
Caixa Postal

INFLUENCE OF IRRIGATION STRATEGIES ON THE PHYSICOCHEMICAL PROPERTIES OF ‘SYRAH’ WINE PRODUCED IN SÃO FRANCISCO VALLEY     VANESSA DE SOUZA OLIVEIRA1; GIULIANO ELIAS PEREIRA2; AUGUSTO MIGUEL NASCIMENTO LIMA1; ALESSANDRA MONTEIRO SALVIANO3; RUSSAIKA LÍRIO NASCIMENTO1 E LUÍS HENRIQUE BASSOI4   1Univasf, Colegiado de Engenharia e Ambienta, Avenida Antonio Carlos Magalhães, 510, 48902-300, Juazeiro - BA, Brasil. [email protected], [email protected], [email protected] 2Embrapa Uva e Vinho, Rua Livramento, 515, Caixa Postal 130, 95701-008, Bento Gonçalves - RS, Brasil. [email protected] 3Embrapa Semiárido, BR 428 km 152, Caixa Postal 23, 56302-970, Petrolina - PE, Brasil. [email protected] 4Embrapa Instrumentação, Rua XV de Novembro, 1452, Caixa Postal 741, 13560-970, São Carlos - SP, Brasil. [email protected]     1 ABSTRACT   Deficit irrigation is used to control grapevine vegetative vigor and the grape composition can be influenced by soil water content. The minerals contained in the grapes are responsible for the physicochemical properties and stability of the wine. Therefore, the aim of this work was to evaluate the effects of irrigation strategies on the properties of ‘Syrah’ wines produced in São Francisco Valley, Brazil. The irrigation treatments used were FI (full irrigation), RDI (regulated deficit irrigation), and DI (deficit irrigation). Winemaking was performed by traditional methods, followed by stabilization and bottling. Density, alcohol content, pH, total and volatile acidity, total and free sulfur dioxide, total polyphenols index, color intensity, and total anthocyanin content were determined, as well as the contents of Ca, Mg, P, K, Na, Mn, Fe, Cu, Zn, Cd, Cr, Ni, and Pb. The properties of wines were influenced by irrigation strategies, except for the content of total anthocyanin, Mg, P, Na, Cu, and Mn. The contents of Cd, Cr, Fe, and Zn were similar in the vines. The wines demonstrated varied properties with different typicalities. Irrigation strategies can be recommended for different products, FI for young and cheap, and DI and RDI for aged and more expensive wines.   Keywords: Vitis vinifera L., grape, water availability, tropical wine.     OLIVEIRA, V. DE S.; PEREIRA, G. E.; LIMA, A. M. N.; SALVIANO, A. M.; NASCIMENTO, R. L. E BASSOI, L. H. INFLUÊNCIA DE ESTRATÉGIAS DE IRRIGAÇÃO NAS PROPRIEDADES FÍSICO-QUÍMICAS DO VINHO ‘SYRAH’ PRODUZIDO NO VALE DO SÃO FRANCISCO           2 RESUMO   A irrigação com déficit é utilizada para controlar o vigor vegetativo da videira, e a composição da uva pode ser influenciada pela umidade do solo. Os minerais presentes nas uvas são responsáveis pelas propriedades físico-químicas e pela estabilidade do vinho. Portanto, o objetivo deste trabalho foi avaliar os efeitos de estratégias de irrigação sobre as propriedades do vinho ‘Syrah’ produzido no Vale do São Francisco, Brasil. As estratégias de irrigação utilizadas foram IP (irrigação plena), IDC (irrigação com déficit controlado) e ID (irrigação com déficit). A elaboração de vinhos foi realizada por métodos tradicionais, seguido de estabilização e engarrafamento. A densidade, teor de álcool, pH, acidez total e volátil, dióxido de total e livre de enxofre, o índice total de polifenóis, a intensidade da cor, conteúdo total de antocianina e concentrações de Ca, Mg, P, K, Na, Mn, Fe, Cu e Zn, Cd, Cr, Ni e Pb foram determinadas. As propriedades dos vinhos foram influenciadas pelas estratégias de irrigação, exceto os teores totais de antocianinas, e de Mg, P, Na, Cu e Mn. Os níveis de Cd, Cr, Fe e Zn foram semelhantes nos vinhos. Os vinhos demonstraram propriedades variadas com diferentes tipicidades. As estratégias de irrigação podem ser recomendadas para a obtenção de diferentes produtos, sendo a IP para vinhos jovens e baratos, e o ID e IDC para vinhos envelhecidos e mais caros.   Palavras chave: Vitis vinifera L., uva, disponibilidade de água, vinho tropical.

scholarly journals Effect of growing location on anthocyanin content and total antioxidant capacity of haskap (Lonicera caerulea L.) berry: A preliminary investigation

2021 ◽  
Vol 48 (No. 4) ◽  
pp. 183-189
Author(s):  
Aruma B.H.K. De Silva ◽  
H.P. Vasantha Rupasinghe
Keyword(s):  
Nova Scotia ◽  
Antioxidant Capacity ◽  
Total Antioxidant Capacity ◽  
Ph Value ◽  
Preliminary Investigation ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Anthocyanin Content ◽  
Total Anthocyanin ◽  
Total Antioxidant

The haskap has been successfully cultivated in many geographical zones in Canada. We investigated whether the latitude has any impact on the anthocyanin accumulation and total antioxidant capacity in the haskap berry. The measured quality attributes were compared with that of the blueberry. Haskap ‘Aurora’ berries were collected from Yukon, British Columbia, Saskatchewan, and Nova Scotia in Canada, and blueberries were collected from Nova Scotia. Cyanidin-3-O-glucoside (C3G), the most abundant anthocyanin of haskap berry, the total anthocyanins, the total polyphenols, the soluble solids (°Brix), the pH value, the total antioxidant capacity, and the moisture content were determined. The results revealed that the total anthocyanin, total phenolic content, and antioxidant capacity of the haskap range between 88 to 273 mg C3GE/100 g fresh weight (FW), 256 to 442 mg GAE/100 g of FW, and 27 to 52 µmol TE/g FW, respectively. The liquid chromatography-mass spectrometry (UPLC/MS) analysis revealed that the C3G contained in the haskap berry is highly dependent on the harvest stage. Among the samples, the haskap berry harvested on July 19, 2019, from the Yukon had the highest C3G content. Interestingly, the total anthocyanin content of the haskap berry is comparable to that of the lowbush blueberry, but higher than the highbush blueberry. A systematic multi-year experiment employing many cultivars and growing locations is recommended to better understand the latitude effect.

Comparative study of hexanal as a dip and electrospun nanofiber mediated vapour treatments on enhancing the shelf life of pears

2021 ◽  
Author(s):  
Syndhiya Ranjan ◽  
Gopinadhan Paliyath ◽  
Loong-Tak Lim ◽  
Jayasankar Subramanian
Keyword(s):  
Shelf Life ◽  
Cold Storage ◽  
Room Temperature ◽  
Consumer Preference ◽  
Storage Conditions ◽  
Soluble Solids ◽  
Continuous Exposure ◽  
Color Retention ◽  
Loss Of Weight ◽  
Better Than

Hexanal slows down the ripening process in fresh produce by inhibiting the activity of phospholipase D, thereby increasing their shelf life. This study focused on comparing the single time exposure and continuous exposure of post-harvest of ‘Anjou’ and ‘Bartlett’ pears to hexanal by dipping or fumigating to enhance their shelf life. Continuous exposure of hexanal was achieved by developing a hexanal encapsulated fiber (HEF), which releases hexanal vapor due to the increased humidity (96±2% RH) in the container headspace as a result of respiration. The fruits were stored at cold storage (0±2°C) conditions and compared with their capacity at normal room temperature (20±2°C). Fruit parameters such as physiological loss of weight (PLW), firmness and total soluble solids (TSS) showed only minor differences between hexanal treated and untreated fruits. Between the two varieties ‘Anjou’ exhibited higher values than ‘Bartlett’, although it was minor. However, when the fruits are visually evaluated, the main aspect of consumer preference, HEF treatments had a better appeal in both varieties and in both conditions. ‘Bartlett’ responded better than ‘Anjou’ even in cold storage conditions, suggesting that there are varietal differences in their response to hexanal. Both hexanal treatments helped color retention and reduced fungal infection during under the storage conditions tested.

Morphological, biochemical and qualitative changes associated with growth and development of pomegranate fruit (Punica granatum L.)

2015 ◽  
Author(s):  
V. S. Supe ◽  
Y. S. Saitwal
Keyword(s):  
Growth And Development ◽  
Arid Zone ◽  
Early Stage ◽  
Soluble Solids ◽  
Maturity Stage ◽  
Anthocyanin Content ◽  
Total Anthocyanin ◽  
Pomegranate Fruit ◽  
Juice Content ◽  
Qualitative Changes

Morphological, biochemical and qualitative changes occurred during growth and development of three pomegranate cultivars were studied at AICRP on Arid Zone Fruits, Department of Horticulture, MPKV, Rahuri. Various changes were determined at 30 days intervals from anthesis till harvest. The pomegranate fruit in all cultivars showed single sigmoid pattern of growth. The size, weight and volume of the fruit of each cultivar increased while the specific gravity increased earlier and then decreased after 90 days in Cv. Bhagwa and after 120 days in Cv. Mridula and Sel-4 to less than one. The elongated oval shape of fruit at the early stage changed to round with prominent suppressions on sides at maturity stage. From those studies, it was revealed that the pomegranate fruits showed colour changes from initial green to orange red and high red at maturity stage and it can be harvested within 150 to 180 days. Among biochemical changes the total soluble solids and TSS: acid ratio increased while the acidity decreased with the advancement in the age of fruit. The total anthocyanin content in arils of pomegranate fruit increased with the advancement in the age of fruit. For qualitative changes, it was found that the percentage of arils and the juice content of arils increased, while the percentage of rind, rind thickness and seed content decreased gradually with the advancement in the age of fruit in each cultivar under study. The percentage of juice content was higher in Mridula at all the stages of maturity than Bhagwa and Sel-4. Seed hardness increased as the fruit matured. Incidence of internal breakdown of arils was noticed earlier in Bhagwa.

scholarly journals Sulphur Dioxide Pads Can Reduce Gray Mold While Maintaining the Quality of Clamshell-Packaged ‘BRS Nubia’ Seeded Table Grapes Grown under Protected Cultivation

Horticulturae ◽  
2020 ◽  
Vol 6 (2) ◽  
pp. 20
Author(s):  
Khamis Youssef ◽  
Osmar Jose Chaves Junior ◽  
Débora Thaís Mühlbeier ◽  
Sergio Ruffo Roberto
Keyword(s):  
Physicochemical Properties ◽  
Shelf Life ◽  
Slow Release ◽  
Gray Mold ◽  
Sodium Metabisulfite ◽  
Total Anthocyanin ◽  
Table Grapes ◽  
Protected Cultivation ◽  
Dual Release

The purpose of this research is to test the efficacy of different types of SO2-generating pads on the incidence of gray mold, and on the physicochemical properties of quality of ‘BRS Nubia’ seeded table grapes grown under protected cultivation. Four types of SO2-generating pads, 5 or 8 g of sodium metabisulfite dual release pads, and 4 or 7 g of sodium metabisulfite slow release pads, were used. Grapes bunches were harvested from a vineyard covered with plastic mash and stored in a cold room at 1 ± 1 °C for 45 days followed by 6 days of shelf life at 22 ± 1 °C at a high relative humidity (>95%). The results showed that SO2-generating pads with a dual release of 5 or 8 g completely inhibited the development of gray mold at all evaluation times. Also, a high reduction of the disease incidence was achieved by using a slow release of 4 g. The study confirmed that SO2-generating pads did not alter the physicochemical properties of ‘BRS Nubia’ seeded table grapes including mass loss, berry firmness, color index, total anthocyanin concentration, total soluble solids (TSS), titratable acidity (TA), and the TSS/TA ratio. Slow release pads at 4 and 7 g reduced the percentage of shattered berries by 56 and 48% as compared to control only after 6 days of shelf life. Also, all types of SO2-generating pads reduced the stem browning score at the end of cold storage. The 5 or 8 g dual release pads and 4 g slow release pads can be considered for effective controlling of gray mold for ‘BRS Nubia’ table grapes grown under protected cultivation while maintaining grape quality.

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