scholarly journals Effect of Ethephon on ripening and postharvest quality of mango

2019 ◽  
Vol 44 (3) ◽  
pp. 453-467
Author(s):  
AA Sabuz ◽  
MGF Chowdhury ◽  
MM Molla ◽  
MHH Khan ◽  
M Miaruddin
Keyword(s):  
Weight Loss ◽  
Ascorbic Acid ◽  
Titratable Acidity ◽  
Reducing Sugar ◽  
Residue Level ◽  
Total Sugar ◽  
Total Carotenoid ◽  
Oxide Production ◽  
Yellow Color ◽  
And Control

The experiment was conducted at the laboratory of Postharvest Technology Division, BARI to evaluate the effect of postharvest application of 6 concentrations (0, 250, 500, 750, 1000 & 10000 ppm) of ethephon on ripening and postharvest qualityof mango (cv. Langra) fruits harvested at mature green stage on 3rdweek of June in 2011 and 2012. The treated fruits were assessed for physiological changes such as ripening %, weight loss (%), biochemical aspects such as TSS (0Brix), titratable acidity (%), reducing sugar (%), total sugar (%), ascorbic acid content (mg/100g), total carotenoids (μg/100g), carbon di oxide production (ml/g fruit) and residual level of the applied ethephon during storage period. The observations were recorded at 2 days interval during 6 days storage at ambient condition (23±2°C with 80±5% RH). Complete yellow color (full ripe) was developed on the fruits treated with 500-1000 ppm ethephon at 4 days of storage while yellowish green and greenish yellow color was developed on 250 ppm treated and control fruits, respectively, and 10000 ppm ethephon treated fruits overripened at this period. At 6 days of storage, 250 ppm ethephon treated fruits got ripen and 500-1000 ppm ethephon treated fruits overripened whereas 10000 ppm treated fruits got rotten and control one was still unripe. Irrespective of ethephon treatments, weight loss of fruits, TSS, reducing sugar, total sugar, carbon di oxide production and total carotenoid showed increasing trends upto 6 days whereas titratable acidity, ascorbic acid and residue level of ethephon showed decreasing trends in both years. At 4 days of storage, 750-1000 ppm ethephon dipped fruits induced uniform attractive yellow color while untreated control fruits remained yellowish greenish (unripe) even after 6 days of storage. At 6 days of storage TSS, reducing sugar, toatal sugar, ascorbic acid and total carotenoid content were found maximum in 750-1000 ppm treated fruits compared to 250-500 ppm treated fruits. The residue level of ethephon in mango fruits treated with ethephon concentrations (250-1000 ppm) at 6 days of storage was found below 2 ppm (0.1 1ppm-0.54 ppm), which is safe for human consumption. Therefore, mangoes ripened by using ethephon @ 750-1000 ppm can be consumed safely without any health risk. Bangladesh J. Agril. Res. 44(3): 453-467, September 2019

Response of cultivars, picking dates and storage period on quality characteristics of imitation cherry of Karonda (Carissa carandas L.) fruits

2016 ◽  
Vol 36 (3) ◽  
Author(s):  
K. K. Mishra ◽  
Suneeta Singh ◽  
Omveer Singh
Keyword(s):  
Ascorbic Acid ◽  
Fruit Set ◽  
Storage Period ◽  
Titratable Acidity ◽  
Reducing Sugar ◽  
Total Sugar ◽  
Enzymatic Browning ◽  
Overall Acceptability ◽  
Entire Storage Period ◽  
Colour Appearance

Imitation cherry of Karonda was prepared from three cultivars viz., Pant Manohar, Pant Sudarshan and Pant Suvarna picked at 40, 60 and 80 days after fruit set. The storability of imitation cherry was evaluated at ambient room temperature for a period of nine months. The imitation cherry prepared at 80 days after fruit set showed maximum TSS (77.83 %), reducing sugar (42.21 %), non-reducing sugar (28.21 %), total sugar, ascorbic acid (6.69 mg/100g), phosphorus (3.55 mg/100g), calcium (1.23 mg/100g), iron (3.72 mg/100g), non-enzymatic browning, colour, appearance, aroma, taste and overall acceptability. Gradual reduction in TSS, reducing sugar, total sugar, titratable acidity, colour, appearance, aroma, taste, texture and overall acceptability were observed during the nine months storage period. However, non-reducing sugar, ascorbic acid and non-enzymatic browning were increased with the increase in storage period. Overall acceptability of the product ranged from 8.15 to 8.43 on 9 point hedonic scale at various intervals up to 9 months of storage. There was no yeast and mould growth being observed during the entire storage period. Imitation cherry prepared from Pant Suvarna at 80 days interval after fruit set proved significantly best in quality because of its higher nutritional and sensory characters.

scholarly journals Post Harvest Assessment and Nutritional Evaluation of Different Cultivars of Taro (Colocasia esculenta L. Schott) Grown in the Alluvial Soils of West Bengal, India

2021 ◽  
pp. 1-9
Author(s):  
Manisha Ch. Momin ◽  
Alemmoa R. Jamir ◽  
Surajit Mitra
Keyword(s):  
Ascorbic Acid ◽  
Specific Gravity ◽  
Moisture Content ◽  
Dry Matter ◽  
West Bengal ◽  
Titratable Acidity ◽  
Matter Content ◽  
Reducing Sugar ◽  
Total Sugar ◽  
Dry Matter Content

Aims: The aim of the study was to evaluate the nutritional content of various cultivars of taro acquired from All India Co-ordinated Research Project (AICRP) on tuber crops. Study design:Completely randomized design (CRD) at 5% level of significance. Place and duration of study: Department of Post Harvest Technology, faculty of Horticulture, Bidhan Chandra KrishiViswavidyalaya, West Bengal, India, between December 2019 and February 2020. Methodology: 8 cultivars of taro were evaluated for their nutritional contents in this study and their physical attributes such as cormel girth, length, specific gravity, number of cormels per plant and weight of cormel as well as yield per hectare was calculated. Chemical attributes such as titratable acidity, starch, ascorbic acid, total phenol and total sugar as well as reducing sugar content in each cultivar was also studied. Results: Analysis of variance showed significant variation among all the tested cultivars. Moisture content, total sugar and starch was recorded to be highest in the cultivar TTR-17-6 (72.233 %, 5.007 % and 31.805 % respectively). Total phenol (188 mg GAE 100 gm-1) and reducing sugar (2.817%) was found to be highest in TTR-17-5. Total soluble solids was highest in TTR-17-7 (3.867 0Brix). Dry matter content was highest in TTR-17-4 (37.333 %) and ascorbic acid was highest in TTR-17-2 (70.093 mg 100 gm-1). Conclusion: The eight cultivars of taro studied were found to be rich in sugars, ascorbic acid, total phenols and starch. They were observed to vary in cormel girth, length, weight, specific gravity, yield, moisture, dry matter content, TSS and titratable acidity. The cultivar TTR-17-6 was found to be very high in starch, total sugar and moisture content. Therefore, this cultivar may be of considerable importance in ameliorating malnutrition in poorly resourced areas of the developing countries. Cultivar TTR-17-2 was found to be high in ascorbic acid and hence can be further used by the plant breeders to develop more cultivars of taro that are rich in such phytochemicals.

scholarly journals Smart Fresh™ in Combination with Film Coatings Reduces Sugar Spots and Extends “Yellow Life” of Bananas

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1144E-1145
Author(s):  
Jorge Siller-Cepeda ◽  
Manuel Baez-Sañudo ◽  
Rosalba Contreras-Martinez ◽  
Laura Contreras-Angulo ◽  
Rosabel Velez ◽  
...  
Keyword(s):  
Weight Loss ◽  
Titratable Acidity ◽  
The Other ◽  
Film Coatings ◽  
Color Development ◽  
Plastic Bags ◽  
Reduce Sugar ◽  
Yellow Color ◽  
And Control

Banana fruits `Cavendish' type were obtained from a warehouse at color green stage. At arrival, fruits were taken out of boxes, dipped into a thiabendazole solution for 5 minutes, dried at room temperature and separated into three lots. One lot was sprayed with Fresh Seal™ (FS) at 3 °Brix, a second lot was treated with Semper Fresh™ (SF) at 1.2%, and the third was left as a control. After that, all fruits were packed again inside the plastic bags within the original carton boxes. Film-coated and control fruits were ethylene treated for 24 hours at 150 ppm, and vented for 24 hours until they reached color 3 (more green than yellow). After that, film-coated and control fruit boxes were collected inside 238-L airtight containers to apply Smartfresh™ (SMF) treatments at 0 and 300 ppb for 12 hours at 22 °C, complementing six different treatments. Later, fruits were stored at 22 °C and 80% to 90% relative humidity for 5 days to follow up changes. Quality evaluations were registered every day, including weight loss, firmness, color, CO2, ethylene, pH, titratable acidity, °Brix, and sugar spots. SF alone and the combinations SF + SMF and FS + SMF reduced weight loss as compared with the other treatments. SMF alone or in combination with FS or SF maintained higher firmness and delayed yellow color development as compared with the other treatments. Combinations of SF or FS with SMF delayed and reduced the incidence of sugar spots as compared with control fruits. Chemical characteristics were not significantly affected by the treatments, but SF + SMF had higher acidity and a lower pH. All treatments reached between 20 and 21 °Brix after 5 days. The data show that combined treatments of SMF and film coatings reduce sugar spot incidence, improving appearance and extending yellow life of fruits.

scholarly journals Effect of Picking Dates on Physico-Chemical Characteristics of Karonda (Carissa Carandas L.) Cultivars

2019 ◽  
Author(s):  
Suneeta Singh ◽  
A. K. Saxena
Keyword(s):  
Ascorbic Acid ◽  
Fruit Set ◽  
Block Design ◽  
Titratable Acidity ◽  
Reducing Sugar ◽  
Total Sugar ◽  
Soluble Solids ◽  
Chemical Characteristics ◽  
Treatment Combination ◽  
Physico Chemical

An experiment was carried out during 2017-18 at Department of Horticulture, School of Agricultural Sciences, District Dehradun, Uttarakhand to see the effect of picking dates on physico-chemical characteristics of Karonda cultivars. The treatments comprised three different dates of picking of berries (40, 60 and 80 Days after fruit set) and three cultivars viz Pant Manohar, Pant Sudarshan and Pant Suvarna. All the 9 treatment combinations were laid out in a 3 x 3 factorial randomized block design with 3 replications. Observations were recorded at three different picking dates. The treatment combination C3D3 (Pant Suvarna + 80 Days after fruit set) was found better in terms of moisture, total soluble solids, reducing sugar, non-reducing sugar, total sugar, titratable acidity, ascorbic acid, phosphorous, calcium and iron content i.e. maximum moisture content (89.41%), highest TSS (8.53ºBrix), highest reducing sugar (6.20%), highest non-reducing sugar (2.03%), highest total sugar (8.33%), highest iron (6.74 mg/100g), maximum ascorbic acid (12.06 mg/100g) and lowest titratable acidity (1.74%), followed by C1D3 (Pant Manohar + 80 Days after fruit set) and C2D3 (Pant Sudarshan + 80 Days after fruit set). The treatment combination C3D2 (Pant Suvarna + 60 Days after fruit set) recorded maximum pectin content.

scholarly journals Effect of holding period prior to storage on the chemical attributes of Starking Delicious apples during refrigerated storage

2012 ◽  
Vol 32 (2) ◽  
pp. 223-227
Author(s):  
Aynur Batkan ◽  
Akif Kundakçi ◽  
Bülent Ergönül
Keyword(s):  
Ascorbic Acid ◽  
Dry Matter ◽  
Sugar Content ◽  
Titratable Acidity ◽  
Quality Attributes ◽  
Reducing Sugar ◽  
Refrigerated Storage ◽  
Holding Period ◽  
Ph Values ◽  
Chemical Attributes

In this research, the effects of three different holding periods (6, 12 and 24 hours) prior to storage on the quality attributes of Starking Delicious apples were investigated during storage of 8 months at 0.5 ± 1.0 ºC. Changes in weight loss, flesh firmness, pH values, soluble dry matter amount, titratable acidity values, ascorbic acid contents, and total and reducing sugar content were determined. According to the results, the holding period showed statistically significant changes in the quality attributes of the apples (p < 0.05).

Effect of Polyolefin Film on the Quality of Kiwifruit with 1-MCP Treatment in Modified Atmosphere Packages

2011 ◽  
Vol 236-238 ◽  
pp. 2769-2772 ◽  
Author(s):  
Xi Hong Li ◽  
Cheng Jun Wang ◽  
Ai Li Wang ◽  
Yao Xiao ◽  
Yao Tang ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Ascorbic Acid Content ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Modified Atmosphere ◽  
Flesh Firmness ◽  
Solids Concentration ◽  
And Control ◽  
Soluble Solids Concentration

Kiwifruit is very perishable especially at 20 °C. The quality of kiwifruit with 1-MCP treatment stored at 20 °C in modified packages was investigated. Three different polyolefin films, including 0.03mm thickness polyethylene (PE), 0.03mm and 0.05mm thickness poly (vinyl chloride) (PVC) films, were used as packaging films. Kiwifruit were fumigated with 1-MCP to delay ripeness and then packaged with the three films and control (air). O2 and CO2 concentrations in the packages, flesh firmness, soluble solids concentration (SSC), titratable acidity (TA) and ascorbic acid were measured. MAP treatments could postpone the increase of TTS, inhibit the reduction of TA, and avoid the decrease of flesh firmness. Kiwifruit packaged in 0.05mm PVC obtained 33% TA more than control fruit and approximate 25 % retention of initial firmness. However, MAP didn’t maintain more ascorbic acid content of kiwifruit. In conclusion, MAP using polyolefin films combination 1-MCP treatment, especially 0.05mm PVC, might be more effective for preserving the quality of kiwifruit.

scholarly journals Armazenamento de atemoias (Annona squamosa x Annona cherimola) recobertas com filme PVC

2015 ◽  
Vol 10 (5) ◽  
pp. 155
Author(s):  
P. A. De Souza ◽  
R. V. da S. Freitas ◽  
E. M. Batista ◽  
F. B. Da Costa ◽  
P. B. Maracajá
Keyword(s):  
Weight Loss ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Annona Squamosa ◽  
Fruit Storage ◽  
Annona Cherimola ◽  
Pvc Film ◽  
The Individual ◽  
Harvest Techniques ◽  
And Control

<p>A atemoia, assim como todos os frutos climatéricos, apresenta uma elevada perecibilidade, tornando-se importante a adoção de técnicas pós-colheita. Este trabalho teve como objetivo avaliar o armazenamento de atemoias recobertas com filme PVC. Os frutos utilizados foram da variedade ‘Gefner’ apresentando-se em estado de maturação verde-maduro. Estes foram transferidos para o laboratório de Química de Alimentos do IFCE, submetidos à higienização e divididos nos devidos tratamentos. O primeiro tratamento constou no armazenamento de cinco frutos em bandejas de isopor recobertos com filme PVC. O segundo, do recobrimento individual dos frutos em filme PVC, sendo estes acondicionados em bandejas de isopor e os frutos do controle. Estes foram armazenados durante 8 dias. O delineamento utilizado foi o DIC em esquema fatorial 3x4 com quatro repetições de cinco frutos por parcela. A cada tempo de armazenamento foram avaliadas: perda de massa, sólidos solúveis, acidez titulável, Ratio, pH e índice de rachaduras. O uso de filme plástico reduz a perda de massa, porém retarda o amadurecimento de frutos de atemoia. As rachaduras estão diretamente associadas ao amadurecimento dos frutos, ao aumento dos teores de sólidos solúveis e possivelmente a cultivar avaliada. </p><p align="center"><strong><em>Storage of atemoyas (</em></strong><em>Annona squamosa<strong> x </strong>Annona cherimola<strong>) covered with PVC film</strong></em><strong><em></em></strong></p><p><strong>Abstract</strong><strong>: </strong>The atemoya, as well as all climacteric fruits, is highly perishable, becoming important to adopt post-harvest techniques. This work aimed to evaluate the atemoyas storage covered with plastic wrap. The fruits used were of the variety 'Gefner' presenting itself in a state of green-mature aging. These were transferred to the Food Chemistry Lab IFCE submitted to cleaning and divided in appropriate treatments. The first treatment consisted in five fruit storage in styrofoam trays covered with plastic wrap. The second, the individual coating of the fruits in PVC film, which are packed in styrofoam trays and control fruits. These were stored for 8 days. The design was the DIC in 3x4 factorial with four replicates of five fruits per plot. Each storage time were evaluated: weight loss, soluble solids, titratable acidity, ratio, pH and cracking index. The use of plastic film reduces the weight loss, however retards the ripening of atemoya fruit. The cracks are directly associated with fruit ripening, increased soluble solids and possibly the cultivar evaluated.</p>

scholarly journals Preparation, quality evaluation and storage stability of peach-soy fruit leather

2014 ◽  
Vol 12 (1) ◽  
pp. 73-88 ◽  
Author(s):  
B Anju ◽  
KR Kumari ◽  
V Anand ◽  
MA Anjum
Keyword(s):  
Ascorbic Acid ◽  
Moisture Content ◽  
Acid Content ◽  
Quality Evaluation ◽  
Storage Stability ◽  
Ascorbic Acid Content ◽  
Reducing Sugar ◽  
Total Sugar ◽  
Physico Chemical ◽  
And Storage

The peach-soy leather was prepared from different blends of peach pulp and soy-slurry. The peach pulp and soybean slurry were blended in the ratios of 100:0, 95:5, 90:10, 85:15, 80:20, 75:25 and 70:30. The prepared leather was stored for a period of four months to ascertain changes in physico-chemical and sensory characteristics. The analysis of leather revealed significant differences among different blends. Highest moisture content i.e. 21.99 percent was recorded in B1 (100:0:: P:S). The highest TSS and acidity of 12.05 degree Brix and 2.77 percent were recorded in B1 (100:0:: P:S), respectively, whereas the highest reducing sugar and total sugar contents of 30.16 and 60.41 percent were found in B1 (100:0:: P:S), respectively. The highest protein and fat contents were recorded in B7 (70:30:: P:S), whereas ascorbic acid content was the highest (23.54 mg 100g-1) in B7 (70:30:: P:S). Sensory evaluation of leather revealed that the highest score of 8.14 was recorded in B4 (85:15:: P:S) and lowest score of 5.63 was recorded in B7 (70:30::P:S). In general there was an increase in TSS, acidity and sugars and decrease in protein, fat and ascorbic acid contents and all sensory attributes during four months storage in different blends of leather. DOI: http://dx.doi.org/10.3329/sja.v12i1.21114 SAARC J. Agri., 12(1): 73-88 (2014)

scholarly journals Qualitative Analysis of Mango (Mangifera indica L.) Fruits at Different Maturity Stages

2010 ◽  
pp. 1-5
Author(s):  
M Ittafaqul ◽  
M Golam Mortuza ◽  
M Al-Amin ◽  
MNA Naher ◽  
SM Khorshed Alam
Keyword(s):  
Ascorbic Acid ◽  
Qualitative Analysis ◽  
Mangifera Indica ◽  
Reducing Sugar ◽  
Total Sugar ◽  
Chemical Compositions ◽  
Maturity Stages ◽  
Ripe Stage

Some chemical compositions of mango harvested at 24, 18, 12, 6 days before optimum maturity and at optimum maturity were analyzed. The amount of ascorbic acid, ?-carotene and sugars of the harvested mangoes were significantly influenced by the stages of harvest and period of storage. Amount of ascorbic acid of the harvested mango fruits was the highest just after harvest. It was sharply declined with the elapse of time in storage. Fruits harvested before optimum maturity showed the highest amount of ascorbic acid, which decreased in delay of harvest. ?-carotene was quite low at harvest but rapidly increased in storage. Fruits harvested before optimum maturity showed minimum ?-carotene and it rapidly increased in late harvested fruits. Total sugar, reducing sugar and non reducing sugar were sharply increased at optimum ripe stage, while slightly declined at last edible stage. All the sugars were the lowest at earliest harvests, which increased gradually with delay in harvest.

scholarly journals Hasat Sonrası Bazı Uygulamaların Autumn Giant Erik Çeşidinin Muhafaza Performansı Üzerine Etkisi

2020 ◽  
Vol 8 (2) ◽  
pp. 504
Author(s):  
Feyza Nur Dursun ◽  
Erdinc Bal
Keyword(s):  
Weight Loss ◽  
Ascorbic Acid ◽  
Salicylic Acid ◽  
Fruit Quality ◽  
Modified Atmosphere Packaging ◽  
Storage Period ◽  
Ascorbic Acid Content ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Quality Properties

In this study, the effect of postharvest salicylic acid (2 mM), oxalic acid (5 mM), putrescine (2 mM) and calcium (4% CaCl2) applications on storage performance of Autumn Giant plum fruit were investigated. After applications, plum fruits were placed in modified atmosphere packaging (MAP) and stored for 40 days at 85-90% relative humidity conditions at 0.5±0.5°C. In order to determine the fruit quality characteristics after treatments, weight loss, soluble solids content, titratable acidity, fruit firmness, ascorbic acid, total flavonoids, total phenolics and total antioxidant content analysis were performed at 10 days’ intervals. According to the results, the effect of applications on weight loss was not significant. The maximum decrease in flesh firmness, titratable acid and ascorbic acid content during storage was determined in control fruits. Although fluctuations in the form of increase or decrease in biochemical compounds were generally observed, decreases occurred according to harvest value at the end of storage period. Considering all measurements and evaluations, it was determined that application of salicylic acid and putrescine had a more positive effect on preservation of fruit quality properties and biochemical content of Autumn Giant plum cultivar during storage than other applications.

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