scholarly journals Bruise Susceptibility and Impact on Quality Parameters of Pears During Storage

2021 ◽  
Vol 5 ◽  
Author(s):  
Pankaj B. Pathare ◽  
Mai Al-Dairi
Keyword(s):  
Supply Chain ◽  
Storage Temperature ◽  
Pearson Correlation ◽  
Fresh Produce ◽  
Drop Height ◽  
Storage Duration ◽  
Post Harvest ◽  
Fruit Samples ◽  
Bruise Susceptibility ◽  
And Storage

Bruise damage is one of the mechanical injury problems that could appear in fresh produce during the post-harvest supply chain. The study investigated three main effects (drop impact level, storage temperature, and storage duration), which can expand the level of bruising and cause some quality changes that contribute to the damage of pear. Pear fruit samples were purchased from the market and delivered to the post-harvest laboratory. Each pear was impacted by a ball with a known mass at three different drop heights (20, 40, and 60 cm), stored at 22°C with 45 ± 5% RH and 10°C with 85 ± 5% RH for 14 days storage period. Bruise area (BA), bruise volume (BV), and bruise susceptibility (BS) were calculated. Different quality analyses were done like color, firmness, and total soluble solids (TSS). Analysis of variance (ANOVA), regression analysis, and pearson correlation coefficient were performed. With increasing drop height and temperature for 14 days storage, BA, BV, BS, lightness (L*), yellowness (b*), color saturation (Chroma), and total color difference increased. However, firmness was highly reduced (92.82%) due to the increase in drop height (60 cm), storage temperature (22°C), and storage duration (14 days). Color purity (Hue), redness (a*), and TSS were not affected by drop height (impact level). A strong relationship with a strong linear regression (R2) was found between BS and CIE L*, a*, and b* color coordinates. A positive and strong correlation was also found between BS and CIEL*a*b* color parameters with a strong and negative correlation with firmness. Overall, this study can be considered as guideline for horticulture researchers and in fresh produce supply chain during post-harvest operations.

scholarly journals Effect of mechanical damage on the quality characteristics of banana fruits during short-term storage

Discover Food ◽  
2022 ◽  
Vol 2 (1) ◽  
Author(s):  
Pankaj B. Pathare ◽  
Mai Al-Dairi
Keyword(s):  
Storage Temperature ◽  
Mechanical Damage ◽  
Soluble Solids ◽  
Drop Height ◽  
Yellowness Index ◽  
Total Soluble Solids ◽  
Bruise Susceptibility ◽  
Ethylene Production Rate ◽  
And Storage ◽  
Storage Temperatures

AbstractFresh fruits like bananas are very susceptible to mechanical damage during postharvest handling which can result in a substantial decline in quality. The study aims to evaluate the effect of bruise damage and storage temperatures on the quality of banana fruits after 48 h storage. Each ‘Grand Naine’ banana fruit was impacted once by using a drop impact test using three different heights (10, 30, and 50 cm) and storage temperatures (13 and 22 °C) after 48 h of storage. Different quality analyses were measured like bruise measurements (impact energy, bruise area, bruise volume, and bruise susceptibility), weight loss, total soluble solids (TSS), color (L*, a*, b*, hue°, chroma, yellowness index, yellowness value) headspace gases (respiration and ethylene production rate). The results showed that bruise measurements (bruise area, bruise volume, and bruise susceptibility) were highly affected by drop height. The quality parameters like weight, color, total soluble solids and headspace gases were affected by drop height and storage condition. Weight loss, total soluble solids, respiration rate, and ethylene production rate increased as drop height and storage temperature rise. Storage at ambient conditions (22 °C) accelerated bruising occurrence in banana fruits. Fewer changes were observed after 48 h of storage. The least value of yellowness index was observed on the non-bruised banana fruits (84.03) under 13 °C storage conditions. The findings of the study can provide baseline data to understand the mechanical damage mechanism on fruit quality, hoping to create awareness and educate farming communities and consumers. Storage temperature management is another approach that needs to be followed to reduce the occurrence of mechanical damage in fresh produce.

Evaluation of Chemical, Biochemical and Microbiological Quality in Tomato Using Multivariate Analysis

2015 ◽  
Vol 11 (2) ◽  
pp. 173-184 ◽  
Author(s):  
Nafiisa Sobratee ◽  
Tilahun S. Workneh
Keyword(s):  
Multivariate Analysis ◽  
Storage Temperature ◽  
Microbiological Quality ◽  
Principal Component ◽  
Model Verification ◽  
Fine Tuning ◽  
Sucrose Hydrolysis ◽  
Post Harvest ◽  
Tomato Quality ◽  
And Storage

Abstract Tomato quality is determined by metabolite content which is governed by post-harvest physiological changes. A 30-day full factorial experiment investigated pre-packaging, disinfection and storage temperatures on 18 different biochemical, microbiological, enzymatic and subjective quality attributes of tomato quality. Principal component analysis revealed associations among the variables such as PC1 (28.85%): coliform/enzymatic softening; PC2 (21.52%): free sugars/sweetness; and PC3 (18.20%): sucrose hydrolysis/microbial spoilage/defense metabolites. Discriminant analysis showed that some specific parameters were highly significant (P<0.001) in determining quality changes in relation to the washing procedures and storage temperature. The prominence of ascorbic acid was observed in the equations which discriminate mostly on the basis of microbial deterioration. Further works in this respect entail fine-tuning through model verification of the equations. Multivariate analysis techniques are, therefore, recommended in studies whereby understanding of the phenomenon driving the post-harvest system’s dynamics has to be understood through diverse interrelated metabolic parameters.

Effect of sample storage temperature and buffer formulation on faecal immunochemical test haemoglobin measurements

2017 ◽  
Vol 24 (4) ◽  
pp. 176-181 ◽  
Author(s):  
Erin L Symonds ◽  
Stephen R Cole ◽  
Dawn Bastin ◽  
Robert JL Fraser ◽  
Graeme P Young
Keyword(s):  
Room Temperature ◽  
Storage Temperature ◽  
Test Accuracy ◽  
Sample Collection ◽  
Storage Duration ◽  
Initial Concentration ◽  
Faecal Immunochemical Test ◽  
Immunochemical Test ◽  
New Formulation ◽  
And Storage

Objectives Faecal immunochemical test accuracy may be adversely affected when samples are exposed to high temperatures. This study evaluated the effect of two sample collection buffer formulations (OC-Sensor, Eiken) and storage temperatures on faecal haemoglobin readings. Methods Faecal immunochemical test samples returned in a screening programme and with ≥10 µg Hb/g faeces in either the original or new formulation haemoglobin stabilizing buffer were stored in the freezer, refrigerator, or at room temperature (22℃–24℃), and reanalysed after 1–14 days. Samples in the new buffer were also reanalysed after storage at 35℃ and 50℃. Results were expressed as percentage of the initial concentration, and the number of days that levels were maintained to at least 80% was calculated. Results Haemoglobin concentrations were maintained above 80% of their initial concentration with both freezer and refrigerator storage, regardless of buffer formulation or storage duration. Stability at room temperature was significantly better in the new buffer, with haemoglobin remaining above 80% for 20 days compared with six days in the original buffer. Storage at 35℃ or 50℃ in the new buffer maintained haemoglobin above 80% for eight and two days, respectively. Conclusion The new formulation buffer has enhanced haemoglobin stabilizing properties when samples are exposed to temperatures greater than 22℃.

scholarly journals Postharvest quality and storage life of Kuini (Mangifera Odorata Griff) at different storage temperature

2020 ◽  
Vol 21 (1) ◽  
pp. 22-31
Author(s):  
O. Zaulia ◽  
O. Nur Allisha ◽  
M.A.I. Mohd Shukri ◽  
M.N. Suriani ◽  
W.I. Wan Mahfuzah ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Acid Content ◽  
Storage Temperature ◽  
Ascorbic Acid Content ◽  
Storage Life ◽  
Export Market ◽  
Local Market ◽  
Storage Duration ◽  
Postharvest Handling ◽  
And Storage

Mangifera Odorata or locally called Kuini, is a mango species with attractive striking orange flesh and have strong and unique smell, make it special in local market. Research is being carried out in MARDI from seed production to marketing to expose M. odorata to local and export market. Postharvest handling technology is one of importance aspect that has been develop to cater the market needs for commercialization. Proper postharvest handling will reduce postharvest losses, maintain freshness and to prolong storage life to make sure consumer get the premium quality of fruit. In postharvest handling, one of most important factors to maintain quality during handling, distribution and display is storage at the optimum temperature. Effect of different storage temperature on quality and storage life of M. odorata var. Tembaga were carried out. M. odorata at 11 to 12 weeks after fruit set were harvest at MARDI Sintok, Kedah and transported to packinghouse MARDI Serdang for storage study. On arrival at MARDI Serdang, fruit were sorted, washed, drain, packed and stored at different storage temperature (8, 10, 13, 15 and 250C). Visual quality assessment (appearance, disease quality changes), physical (texture, colour (Lightness, hue, chroma)) and chemical (pH, total titratable acidity (TTA), ascorbic acid, soluble solid content (SSC)) analysis were carried out weekly. Results of this study showed that storage duration and different storage duration significantly affected SSC. pH, TTA, chroma of M. odorata. The highest TSS, pH and chroma of M. odorata at 100C and the lowest at 250C. The highest TTA of M. odorata at storage temperature 80C and 130C, and the lowest TTA at 250C. Ascorbic acid content not significantly affected by different storage temperature from 8 to 150C, but significant different compare to ascorbic acid content at ambient storage temperature. Ascorbic acid content of M. odorata significantly lower at 250C compare to storage at 8 C - 150C. Lightness and texture of M. odorata slightly decrease during storage but not significant (P>0.05). Lightness of M. Odorata was not significantly affected by different storage temperature. Hue of M. Odorata significantly affected by storage duration and but not affected by different storage temperature. Hue of M. odorata significantly increased in the first weeks of storage, followed by significant decreased at week 2, maintain until week 4 and significantly decreased at week 5. Quality observed visually showed that freshness of M. Odorata maintain 5 weeks at 80C, 4 weeks at 100C, 2 weeks at 10 – 150C and 1 week at 250C.

scholarly journals The effect of ionizing radiation and storage temperature on the post-harvest growth and some quality properties of mushrooms (Agaricus bisporus)

2013 ◽  
Vol 39 (2) ◽  
pp. 207-219 ◽  
Author(s):  
Kryspina Śmierzchalska ◽  
Elżbieta Wojniakiewicz
Keyword(s):  
Ionizing Radiation ◽  
Shelf Life ◽  
Agaricus Bisporus ◽  
Storage Temperature ◽  
Stem Elongation ◽  
Quality Properties ◽  
Bacterial Diseases ◽  
Post Harvest ◽  
And Storage

The effects of a dose of 2.0 kGy (Co-60) and three ranges of storage temperature (0-4°C, 9-11°C, 18-19°C) on increasing the shelf-life and some quality properties of the mushrooms were investigated. The retardation of mushroom growth and ageing by ionizing radiation was estimated by measurements of the cap diameter, stem elongation, cap opening and discoloration of cap surface. The control of fungal and bacterial diseases was also evaluated. The effect of lower doses, 0.5 and 1.0 kGy, was compared at the storage temperature of 10°C. The irradiation of mushrooms soon after harvest and storage at temperatures of 10 and 16°C allowed the retention of quality and increased the shelf-life to 8 days; at 18-19°C to 6 days.

scholarly journals Shipping and storage temperature logger datasets for extended shelf life vacuum packaged chilled beef in the Chinese supply chain

Data in Brief ◽  
2019 ◽  
Vol 27 ◽  
pp. 104586 ◽  
Author(s):  
Damian Frank ◽  
Yimin Zhang ◽  
Xin Luo ◽  
Xue Chen ◽  
Glen Mellor ◽  
...  
Keyword(s):  
Supply Chain ◽  
Shelf Life ◽  
Storage Temperature ◽  
Temperature Logger ◽  
And Storage

Pipeline Sludge Sampling for Assessing Internal Corrosion Threat

2014 ◽  
Author(s):  
Alfonso Garcia ◽  
Trevor Place ◽  
Michael Holm ◽  
Jennifer Sargent ◽  
Andrew Oliver
Keyword(s):  
Storage Temperature ◽  
High Variability ◽  
Solid Particles ◽  
Microbiologically Influenced Corrosion ◽  
Storage Duration ◽  
Population Activity ◽  
Bacterial Populations ◽  
Internal Corrosion ◽  
And Storage ◽  
Transmission Pipelines

Internal corrosion sometimes occurs under deposits of solid particles on the bottom of transmission pipelines. The solids trap water with soluble products and other nutrients which can support the development of microbial communities and may lead to Microbiologically Influenced Corrosion (MIC). Corrosion processes associated with the metabolic activities of specific bacteria have been discussed elsewhere, but the simple presence of large microbial populations may increase the risk of internal corrosion owing to the ability of biofilms to extract and concentrate water at the pipe floor. As a method to monitor the internal corrosion threat in transmission pipelines and recommend mitigating activities for corrosion management, reliable microbial content and corrosion activity correlations are desired. Sludge samples have been obtained from cleaning pigs at the pipe trap and analyzed using Biological Activity Reaction Test (BART™) (or serial dilution test), Dean-Stark analysis, XRD and EDX. These tests provide information about certain bacterial populations, water / solid / hydrocarbon content, and crystalline/elemental composition of these solids, respectively. Despite best efforts, bacterial population/activity of pipeline sludge samples exhibit high variability and are difficult to correlate to actual internal corrosion in a pipeline. Considering that bacterial populations in pipeline sludge may be a meaningful representation of the internal corrosion threat to a transmission pipeline, a more rigorous approach on the sludge sampling procedure is necessary to improve the accuracy and reliability of the bacterial assays. It is also important to control such variables as storage temperature of the samples, exposure to air, and storage duration prior to enumeration — as these may affect the viability of the sample and enumeration results. This report presents historical pipeline sludge analysis data and suggests a method to evaluate data containing high variability. Practical recommendations to reduce data variability through handling and storage of sludge samples are also discussed.

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