scholarly journals Synergistic Effect of Calcium Chloride and Chitosan Treatment on Physicochemical Characteristics of Pineapple (Ananas Comosus) Fruit During Cool Storage

2020 ◽  
Vol 11 (3) ◽  
Author(s):  
Nguyen Minh Phuoc
Keyword(s):  
Synergistic Effect ◽  
Calcium Chloride ◽  
Physicochemical Characteristics ◽  
Ananas Comosus ◽  
Cool Storage

scholarly journals Post-harvest behavior of green peppers after pectin methyl esterase and calcium chloride application

2020 ◽  
pp. 213
Author(s):  
Airles Regina da Costa Paixão
Keyword(s):  
Calcium Chloride ◽  
Physicochemical Characteristics ◽  
Fresh Mass ◽  
Soluble Solids ◽  
Pectin Methyl Esterase ◽  
Green Pepper ◽  
Vacuum Infusion ◽  
Post Harvest ◽  
Life Problems ◽  
Solids Content

The green pepper (Capsicum annuum L.) is an important Brazilian vegetable and it is very much appreciated, besides being a source of vitamins, minerals and fibers. However, it has serious post-harvest shelf-life problems, such as tissue softening. The exogenous application of pectin methyl esterase and calcium has been shown to be efficient in maintaining the firmness of several fruits. Thus, the present study had as objective to evaluate the effects of the application of exogenous pectin methyl esterase (PME) and calcium in post-harvest conservation of the cv. Yolo Wander. For this, the green peppers were submitted to vacuum infusion with water, vacuum infusion with 7% of calcium chloride and vacuum infusion of PME associated to 7% calcium chloride, fruits without infusion were used as control. Loss of fresh mass, fruit firmness, peel color, soluble solids content, pH, total acidity and PME activity were evaluated. In relation to the loss of fresh mass there was a significant increase over time in all treatments. Also, according to the results, the fruits not immersed or those immersed in calcium chloride showed greater maintenance of the firmness, as well as smaller variations in the activity of the SME and low levels of organic acids. The vacuum infusion with 7% calcium chloride maintained the firmness and the physicochemical characteristics of the green pepper. However, the application of PME + CaCl2 did not promote the maintaining desirable firmness characteristics for the green pepper.

scholarly journals CRESCIMENTO VEGETATIVO, PRODUTIVIDADE E QUALIDADE DOS FRUTOS DO ABACAXIZEIRO ‘BRS IMPERIAL’ SOB LÂMINAS DE IRRIGAÇÃO

Irriga ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 398-410
Author(s):  
Weslley do Rosário Santana ◽  
Luã Víthor Chíxaro Almeida Falcão Rosa ◽  
Joabe Martins de Souza ◽  
Robson Bonomo
Keyword(s):  
Vegetative Growth ◽  
Block Design ◽  
Irrigation Management ◽  
Physicochemical Characteristics ◽  
Soluble Solids ◽  
Ananas Comosus ◽  
Espírito Santo ◽  
Physical Chemical ◽  
Espirito Santo

CRESCIMENTO VEGETATIVO, PRODUTIVIDADE E QUALIDADE DOS FRUTOS DO ABACAXIZEIRO ‘BRS IMPERIAL’ SOB LÂMINAS DE IRRIGAÇÃO     WESLLEY DO ROSÁRIO SANTANA1; LUÃ VÍTHOR CHÍXARO ALMEIDA FALCÃO ROSA1; JOABE MARTINS DE SOUZA1 E ROBSON BONOMO1   1Departamento de Ciências Agrárias e Biológicas, Universidade Federal do Espírito Santo, Rod. Governador Mario Covas, Km 60 - Litorâneo, CEP 29932-540, São Mateus, ES, Brasil. E-mail: [email protected]; [email protected]; [email protected]; [email protected]     1 RESUMO   Conhecer a demanda hídrica de uma cultura em uma região possibilita um melhor manejo da irrigação e desenvolvimento da cultura. Diante disso, objetivou-se avaliar o crescimento vegetativo, qualidade físico-química dos frutos e a produtividade do abacaxizeiro ‘BRS Imperial’ sob lâminas de irrigação nas condições de tabuleiro costeiro, no estado do Espírito Santo (ES). O experimento foi realizado na Universidade Federal do Espírito Santo, município de São Mateus, em um delineamento em blocos casualizados, com sete lâminas de irrigação (0%, 25%, 50%, 75%, 100%, 125% e 150% da evapotranspiração de cultura-ETc), quatro repetições e seis plantas úteis por parcela. Foram avaliadas características vegetativas da planta e físico-químicas dos frutos e a produtividade. Os resultados obtidos foram submetidos à análise de variância. Para as condições em estudo, a maior altura de planta e diâmetro do caule observado foi de 28,8 cm e 65,1 mm, respectivamente, ambos na lâmina aplicada referente a 69% da reposição da ETc. Para as características físico-químicas analisadas, as lâminas de irrigação aplicadas não influenciaram significativamente a cultura. A produtividade obtida foi de 40,41 t ha-1, com teor médio de sólidos solúveis totais de 16,46 ºBrix, valor superior ao mínimo exigido para a colheita e comercialização.   Palavras-chave: Ananas comosus (L.) Merril, características físico-químicas, massa do fruto, manejo da irrigação.     SANTANA, W. do R.; ROSA, L. V. C. A. F.; SOUZA, J. M. de; BONOMO, R. VEGETATIVE GROWTH, YIELD AND FRUIT QUALITY OF PINEAPPLE CROP ‘BRS IMPERIAL' UNDER IRRIGATION DEPTHS     2 ABSTRACT   Knowing the hydric demand of a crop in a region enables better irrigation management and crop development. Thus, this study aimed to evaluate the vegetative growth, physical-chemical quality of the fruits and the yield of the pineapple crop ‘BRS Imperial’ under irrigation depths in coastal conditions, in the state of Espírito Santo (ES). The experiment was conducted at the Federal University of Espírito Santo, municipality of São Mateus, in a randomized block design, with seven irrigation depths (0%, 25%, 50%, 75%, 100%, 125% and 150% of the evapotranspiration of the crop (ETc)), four replications and six useful plants per plot. The vegetative characteristics of the plant and the physicochemical characteristics of the fruits were evaluated, as well as the yield. The results were subjected to analysis of variance. For the conditions under study, the highest plant height and stem diameter observed were 28.8 cm and 65.1 mm, respectively, both in the applied irrigation depth referring to 69% of the replacement of the ETc. For the physical-chemical characteristics analyzed, the applied irrigation depths did not significantly influence the crop. The yield obtained was 40.41 t ha-1, with an average content of total soluble solids of 16.46 ºBrix, higher than the minimum required for harvest and commercialization.   Keywords: Ananas comosus (L.) Merril, physicochemical characteristics fruit, fruit mass, irrigation management.

Breakdown in Jonathan and Delicious apples in relation to weight lost during cool storage

1967 ◽  
Vol 7 (24) ◽  
pp. 87 ◽  
Author(s):  
KJ Scott ◽  
EA Roberts
Keyword(s):  
Weight Loss ◽  
Calcium Chloride ◽  
Storage Period ◽  
Cool Storage

The incidence of breakdown in Jonathan and Delicious apples stored in the presence of calcium chloride was studied. Jonathans from two orchards and Delicious from one orchard were stored at 32�F in 1963, and Jonathan and Delicious from one orchard were stored at 30�, 32�, and 36�F in 1964. On four occasions in 1963, and on three in 1964, samples were transferred from cool storage to storage at 68�F and inspected for breakdown seven days later. In each of the thirty orchard-variety-season-storage period classes the decrease in incidence of breakdown with increased weight loss was always very highly significant (P<0.001), and varied from 2.1 to 8.7 degrees for each per cent of weight loss.

scholarly journals The Physicochemical Characteristics and Protein Profile of Cottage Cheese Produced by Using Crude Bromelain Enzyme Extracted from Ananas Comosus

2021 ◽  
Vol 9 (2) ◽  
pp. 578-587
Author(s):  
Sylvia Komansilan ◽  
Djalal Rosyidi ◽  
Lilik Eka Radiati ◽  
Purwadi Purwadi ◽  
Herly Evanuarini
Keyword(s):  
Physicochemical Properties ◽  
Protein Profile ◽  
Total Yield ◽  
Physicochemical Characteristics ◽  
Ash Content ◽  
Product Diversification ◽  
Cottage Cheese ◽  
Ananas Comosus ◽  
Randomized Design ◽  
Significant Difference

The utilization of an alternative enzyme for rennet substitution in cheese production offers promising potential for product diversification. In this research, the physicochemical characteristics and protein profile of cottage cheese made by using the crude extract of bromelain enzyme from Ananas comosus were evaluated. The observed variables include protein, fat, water, and ash content, as well as the cottage cheese yields, texture, meltability and protein profile. The research was conducted in a completely randomized design with 3 different bromelain concentrations at 1.5% (K1); 3% (K2); and 4.5% (K3) and each was replicated for 4 times. The obtained data were analyzed with analysis of variance (ANOVA) and followed with the Least Significant Difference (LSD) test to measure significant differences, while the protein profile of the cottage cheese was observed by using SDS-PAGE and analyzed descriptively. The different enzyme concentrations showed that the different bromelain concentrations had significant differences (P<0.01) to the overall physicochemical properties of the cottage cheese, with the protein content at 11.50 to 12.64%; fat content at 2.13 to 5.21%; water content at 56.01 to 57.65%; and ash content at 0.59 to 1.68%. The produced cottage cheese had yields at 8.46 to 10.62%; texture at 3.67 to 3.81 N; and meltability at 1.89 to 2.82%, while the protein profile observation showed different bands at 4.58 to 160.47 kDa. The research concludes that 3% bromelain concentration produces cottage cheese with the best physicochemical properties in this research, that contained 12.64±0.43% protein, 2.13±0.90% fat, 56.06±0.22% water, 0.59±0.38% ash, with cheese texture of 3.81±0.11 N and 282±0.13% meltability from a total yield of 10.62±0.06%.

scholarly journals Efecto de tres concentraciones de guarapo de caña de azúcar (Saccharum) sobre las características físico-químicas en la elaboración de vino de piña (Ananas comosus)

2018 ◽  
pp. 41
Author(s):  
Luis Cornejo Solórzano ◽  
Manuel Flores Vera ◽  
María Zambrano Vélez ◽  
Wagner Antonio Gorozabel Muñoz ◽  
Jordán García Mendoza
Keyword(s):  
Sugar Cane ◽  
Raw Materials ◽  
Physicochemical Characteristics ◽  
Cane Sugar ◽  
Wine Industry ◽  
Soluble Solids ◽  
Ananas Comosus ◽  
Cane Juice ◽  
Sugar Cane Juice ◽  
Alcohol Conversion

Effect of three concentrations of sugar cane guarapo (Saccharum) and its impact on the physicochemical characteristics in the production of pineapple wine (Ananas comosus) Resumen Dentro de los procesos agroindustriales el vino es considerado como una alternativa viable para la industrialización de frutas, ya que estas materias primas poseen las características necesarias para poder inducir la fermentación alcohólica, además el jugo de caña por ser una fuente importante de sacarosa la misma que puede ser considerada para incluirla dentro de la industria vinícola.  Por lo tanto, el objetivo de la presente investigación fue evaluar el efecto de tres concentraciones de guarapo de caña de azúcar (Saccharum) sobre las características físico-químicas en la elaboración de vino de piña (Ananas comosus), que se realizó en la Facultad de Ciencias Zootécnicas extensión Chone. Para la elaboración del vino de fruta se utilizó un DCA unifactorial con tres replicas, donde el factor en estudio fue reemplazar guarapo de caña al 15% (T1), 30% (T2), y 45% (T3), más un testigo T0 (100% mosto de piña). El proceso fermentativo fue evaluado en un periodo de 20 días, cuyas variables medidas fueron: pH, comportamiento de los S.S (actividad fermentativa), y conversión de alcohol. Los resultados obtenidos indicaron que el T3 obtuvo un pH de 3,81 a diferencia del T0 con un pH menor de 3,25. De acuerdo al comportamiento de los sólidos solubles en el T0 se observó S.S finales de 8,1°Brix, mientras que el T3 presento 6°Brix finales. La conversión del grado alcohólico en el T3 reflejó 10.7°GL siendo este el mayor promedio. Palabras clave: Fermentación; vinícola, guarapo de caña; vino. Abstract Within the agro industrial processes, wine is considered as a viable alternative for the industrialization of fruits, since these raw materials possess the necessary characteristics to be able to induce alcoholic fermentation, besides the cane juice for being an important source of sucrose the same as It can be considered to include it within the wine industry. Therefore, the objective of the present investigation was to evaluate the effect of three concentrations of sugar cane juice (Saccharum) on the physico-chemical characteristics in the elaboration of pineapple wine (Ananas comosus), which was carried out in the Faculty of Zootechnical Sciences extension Chone. For fruit wine elaboration, a unifactorial DCA with three replicates was used, where the factor under study was replacing cane sugar cane at 15% (T1), 30% (T2), and 45% (T3), plus a T0 control (100% pineapple must). The fermentative process was evaluated in a period of 20 days, whose measured variables were: pH, behavior of S.S (fermentative activity), and alcohol conversion. The results obtained indicated that T3 obtained a pH of 3.81 unlike T0 with a pH of less than 3.25. According to the behavior of the soluble solids in the T0, the final S.S of 8.1 ° Brix was observed, while the T3 presented the final 6 ° Brix. The conversion of the alcoholic strength in T3 reflected 10.7 ° GL, this being the highest average. Keywords: Fermentation; wine, cane juice; wine.

scholarly journals PME and CaCl2 vacuum infusion maintains the firmness and physicochemical characteristics of tomato fruits

2021 ◽  
Vol 10 (12) ◽  
pp. e288101220574
Author(s):  
Marcelle Leite Sobral ◽  
Alexandre Passos Oliveira ◽  
Pryanka Thuyra Nascimento Fontes ◽  
Letícia Ribeiro Pimenta ◽  
Daniela Almeida de Assunção ◽  
...  
Keyword(s):  
Calcium Chloride ◽  
Pectin Methylesterase ◽  
Physicochemical Characteristics ◽  
Fresh Mass ◽  
Soluble Solids ◽  
Vacuum Infusion ◽  
Randomized Design ◽  
Peel Color ◽  
Infusion Method ◽  
Solids Content

Tomato is a fruit of great commercial importance and highly cultivated. However, postharvest losses represent one of the main problems of this crop and can be minimized as alternative techniques. Therefore, the objective of the present work was to maintain tomato firmness by applying calcium chloride-associated pectin-methylesterase (PME) by the vacuum infusion method. Tomatoes of cultivar IAP-6 were submitted to vacuum infusion with water, vacuum infusion with 5% calcium chloride and vacuum infusion with PME associated with 5% calcium chloride, fruits without infusion were used as control. Fresh mass loss, fruit firmness, peel color, soluble solids content, pH, total acidity, PME activity and calcium activity were evaluated. The experiment was carried out in a completely randomized design in a 4x5 factorial scheme with three replications for 12 days, evaluated every 3 days. The means were compared using the Tukey test (p <0.05). Data were analyzed graphically with confidence interval (CI p <0.05). Regarding the loss of fresh mass there was an increase over time in all treatments. The PME + CaCl2 5% treatment was the most suitable for reducing firmness loss, as well as presenting the smallest variation of PME activity, as well as low levels of organic acids. Therefore, vacuum infusion with PME + CaCl2 in tomatoes maintains acceptable firmness and physicochemical characteristics as well as CaCl2 infusion.

scholarly journals Molecular Dynamics Analysis of Synergistic Effects of Ions and Winter Flounder Antifreeze Protein Adjacent to Ice-Solution Surfaces

Crystals ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 302 ◽  
Author(s):  
Tatsuya Yasui ◽  
Tadashi Kaijima ◽  
Ken Nishio ◽  
Yoshimichi Hagiwara
Keyword(s):  
Molecular Dynamics ◽  
Synergistic Effect ◽  
Calcium Chloride ◽  
Freezing Point ◽  
Saline Water ◽  
Antifreeze Protein ◽  
Winter Flounder ◽  
Water Molecules ◽  
Mixed Solution ◽  
Hydration Shells

The control of freezing saline water at the micrometer level has become very important in cryosurgery and cryopreservation of stem cells and foods. Adding antifreeze protein to saline water is a promising method for controlling the freezing because the protein produces a gap between the melting point and the freezing point. Furthermore, a synergistic effect of the solutes occurs in which the freezing point depression of a mixed solution is more noticeable than the sum of two freezing point depressions of single-solute solutions. However, the mechanism of this effect has not yet been clarified. Thus, we have carried out a molecular dynamics simulation on aqueous solutions of winter flounder antifreeze protein and sodium chloride or calcium chloride with an ice layer. The results show that the cations inhibit the hydrogen bond among water molecules not only in the salt solutions but also in the mixed solutions. This inhibition depends on the local number of ions and the valence of cations. The space for water molecules to form the hydrogen bonds becomes small in the case of the mixed solution of the protein and calcium chloride. These findings are consistent with the synergistic effect. In addition, it is found that the diffusion of ions near positively-charged residues is attenuated. This attenuation causes an increase in the possibility of water molecules staying near or inside the hydration shells of the ions. Furthermore, the first hydration shells of the cations become weak in the vicinity of the arginine, lysine and glutamic-acid residues. These factors can be considered to be possible mechanisms of the synergistic effect.

scholarly journals Synergistic effect of calcium chloride and 1-Methylcyclopropene on storage of watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai

2021 ◽  
Vol 8 (1) ◽  
pp. 118-122
Author(s):  
Minh Phuoc Nguyen Nguyen
Keyword(s):  
Weight Loss ◽  
Ascorbic Acid ◽  
Synergistic Effect ◽  
Decay Rate ◽  
Calcium Chloride ◽  
Citrullus Lanatus ◽  
Total Soluble Solid ◽  
Ambient Storage ◽  
Soluble Solid ◽  
High Respiration Rate

Watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai was a climacteric variety with a high respiration rate and ethylene accumulation. Therefore the fruit matures and softeness quickly during post-harvest period. Calcium chloride was popularly utilized as stabilizing agent. 1-methylcyclopropene (1-MCP) has been known to be highly effective inhibitor of ethylene reaction. This research evaluated the synergistic effect of CaCl2 and 1-methylcyclopropene (1-MCP) treatment to weight loss, firmness, total soluble solid, carotenoid, ascorbic acid and decay rate of watermelon during storage. Results showed that a combination of 2.5% CaCl2 and 0.6 ppm 1-MCP in 20 min of immersion could extend watermelon shelf life for 15 days. After 15 days of ambient storage, the weight loss (1.43±0.02 %), firmness (4.38±0.00 N), total soluble solid (13.60±0.01 oBrix), carotenoid (16.31±0.02 µg/100g), ascorbic acid (13.36±0.03 mg/100g), decay rate (0.47±0.02 %) were clearly presented. Meanwhile, the treatment of 2.5% CaCl2 alone showed the weight loss (2.11±0.02 %), firmness (3.03±0.02 N), total soluble solid (10.83±0.02 oBrix), carotenoid (12.97±0.03 µg/100g), ascorbic acid (9.57±0.02 mg/100g), decay rate (2.14±0.01 %). The incorporation of CaCl2 and 1-MCP created a synergistic effect on the improved quality of watermelon fruit during ambient storage.

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