Chitosan-Based Antimicrobial Coating for Improving Postharvest Shelf Life of Pineapple

Rapid postharvest losses and quality deteriorations in pineapple are major challenges to growers and handlers. Chitosan-based coatings on fruit surfaces have gained importance in recent years to enhance postharvest shelf life of the fruits. In this study, aloe vera gel was added as a natural antioxidant in chitosan-based composite coating containing ZnO nanoparticles. The developed formulation was applied on the surface of freshly harvested pineapple fruits. ZnO nanoparticles were used as an antimicrobial agent. Coated pineapple fruits were evaluated for weight loss, total soluble solids, titratable acidity, decay index, maturity index, and sensory attributes, including visual appearance, periodically at 5 day interval during storage. The results showed that the coating of the fruit reduced weight loss by about 5%, and also delayed ripening and oxidative decay compared to the uncoated fruit. Thus, the developed coating formulation is a promising sustainable solution to reduce postharvest losses and to extend shelf life of pineapples.

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Effect of Different Waxing Materials on the Quality and Shelf Life of Mysore Banana Variety

Asian Journal of Advanced Research and Reports ◽

10.9734/ajarr/2020/v12i130277 ◽

2020 ◽

pp. 1-11

Author(s):

P. Kumah ◽

P. K. Tandoh ◽

K. S. Konadu

Keyword(s):

Weight Loss ◽

Shelf Life ◽

Value Chain ◽

Titratable Acidity ◽

Cassava Starch ◽

Fruit Weight ◽

Matter Content ◽

Soluble Solids ◽

Dry Matter Content ◽

Quality And Shelf Life

Banana is a climacteric fruit with a short shelf life. As a result, huge losses are incurred during handling in the value chain. The need to develop means of extending the shelf life and concomitantly maintaining the quality of the fruit after harvest has become very important. This study was conducted to determine the effects of two different edible waxing materials (beeswax and cassava starch) used as coatings on the quality and shelf life of Mysore banana. The study was conducted in the laboratory at the Department of Horticulture, Kwame Nkrumah University of Science and Technology–Kumasi. The experiment was laid out in a simple completely randomized design (CRD) and replicated three (3) times with three treatments (beeswax, cassava starch and a control). Parameters studied were: fruit weight loss, firmness, peel colour, pulp-to-peel ratio, moisture content (MC), dry matter content (DMC), total titratable acidity (TTA), total soluble solids (TSS), pH, green life and shelf life. The results showed beeswax and cassava starch had no significant effect (P>0.01) on peel colour, fruit firmness, TTA, TSS, DMC, MC and green life. Beeswax, however, kept weight loss minimal, and reduced TSS and the pulp-to-peel ratio of the fruits during storage. We conclude that beeswax was the best treatment in terms of waxing Mysore banana fruits to maintained its quality and ultimately prolonged its shelf life by about four (4) days more than the control.

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The effects of heat treatment and modified atmosphere packaging on the storage stability of noni (Morinda citrifolia L.) fruit

Food Research ◽

10.26656/fr.2017.5(5).762 ◽

2021 ◽

Vol 5 (5) ◽

pp. 105-115

Author(s):

Nuraisyah Z. ◽

Ezzat M.A. ◽

Radhiah S. ◽

Prima L.

Keyword(s):

Weight Loss ◽

Shelf Life ◽

Herbal Remedy ◽

Modified Atmosphere Packaging ◽

Titratable Acidity ◽

Hot Water ◽

Soluble Solids ◽

Morinda Citrifolia ◽

Modified Atmosphere ◽

Black Spots

Noni fruit (Morinda citrifolia L.) is a herbal remedy known for its therapeutic and nutritional value. However, it is perishable and subject to rapid postharvest deterioration that shortens its shelf life during storage. Therefore, this study investigated whether hot water dipping (HWD; 60°C, 1 min) and Modified Atmosphere Packaging (MAP; carbon dioxide and nitrogen) could prolong noni's shelf life. The noni physicochemical properties such as colour, firmness, weight loss, total soluble solids, titratable acidity and scopoletin content were monitored during six days of storage at room temperature. During storage, the noni skin colour changed from greenish-yellow to translucent yellow, but HWD storage was stopped on day 2 due to black spots' formation. The reduction of weight loss was significantly lowest in both MAP treatments (1.39–1.74%). Among these, N2-based had a significantly higher scopoletin content (27.12 mg/g) and firmness (0.8 N) compared to CO2-based, suggesting that it was the most effective postharvest treatment to efficiently prolong the shelf life and retained the quality and stability of noni during storage.

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Relative humidity during cold storage on Postharvest quality of 'Niagara Rosada' table grapes

Ciência Rural ◽

10.1590/0103-8478cr20130307 ◽

2015 ◽

Vol 45 (3) ◽

pp. 386-391 ◽

Cited By ~ 3

Author(s):

Josuel Alfredo Vilela Pinto ◽

Márcio Renan Weber Schorr ◽

Fabio Rodrigo Thewes ◽

Deiverson Luiz Ceconi ◽

Vanderlei Both ◽

...

Keyword(s):

Weight Loss ◽

Relative Humidity ◽

Shelf Life ◽

Cold Storage ◽

Titratable Acidity ◽

Soluble Solids ◽

Postharvest Quality ◽

Table Grapes ◽

Niagara Rosada

This study aimed to evaluate the effect of different levels of relative humidity (RH) on the maintenance of Postharvest quality of 'Niagara Rosada' table grapes after cold storage at 0.5°C for 21 days. A completely randomized design was used, with five replicates of 18 clusters per treatment. The selected levels of relative humidity were 85, 90, 95 and 100%, obtained by means of electronic humidity controllers. The fruits were evaluated in relation to rot incidence, berry cracking, browning rate, respiratory rate, titratable acidity, soluble solids, resistance to abscission, berry drop and weight loss. The evaluations were assessed at 20 days of storage and after two and four days of shelf-life (20°C; 85% RH). The results showed that as higher as relative humidity, higher is rot incidence and that the variables rachis browning and weight loss were inversely related to relative humidity. Resistance to abscission at the end of storage was higher when humidity ranged between 90 and 95%, but it was not affected after transfer to shelf-life from cold storage. Relative humidity ranging between 90 and 95% offer the best conditions to maintain the Postharvest quality of 'Niagara Rosada' table grapes

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Evaluation of the shelf-life extension and sensory properties of mahewu–A non-alcoholic fermented beverage by adding Aloe vera (Aloe barbadensis) powder

British Food Journal ◽

10.1108/bfj-11-2019-0846 ◽

2020 ◽

Vol 122 (11) ◽

pp. 3419-3432

Author(s):

Mpho Edward Mashau ◽

Afam Israel Obiefuna Jideani ◽

Lucy Lynn Maliwichi

Keyword(s):

Shelf Life ◽

Aloe Vera ◽

Storage Period ◽

Titratable Acidity ◽

Sensory Properties ◽

Soluble Solids ◽

Life Extension ◽

Small Scale ◽

Aloe Barbadensis ◽

Content Type

PurposeThe purpose of this paper is to determine the effect of adding Aloe vera powder (AVP) in the production of mahewu with the aim of determining its shelf-life and sensory qualities.Design/methodology/approachMahewu was produced at home (Sample B) and in the laboratory (Sample C) using a standard home-made procedure with the addition of AVP. A control mahewu (Sample A) was produced without AVP. Shelf-life was determined by following the chemical, microbiological, physical properties at 36 ± 2 °C for 60 days and the sensory properties of the products were also evaluated.FindingsPhysicochemical analysis revealed decreases in pH ranging between 3.3 and 2.4 from day 15–60 days of storage in all three samples. There was a significant increase (p < 0.05) in titratable acidity (0.2–1.8%) of all mahewu samples during storage. Total soluble solids were different amongst the samples from day 15 to day 60. The colour of the products was significantly different (p = 0.05) with respect to L*, a* and b* throughout the storage period. Microbiological results revealed an increase in coliforms bacteria, lactic acid bacteria, and yeast during storage. Sensory analysis showed that the control mahewu was more preferred than AVP added mahewu.Practical implicationsThe study may help small-scale brewers to increase the shelf-life of mahewu.Originality/valueResults of this study showed that the addition of AVP extended shelf-life of mahewu up to 15 days at 36 ± 2 °C.

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Edible Coating Based on Roselle (Hibiscus sabdariffa L.) Mucilage Applied to Soursop Fruits in Postharvest Storage

Journal of Food Quality ◽

10.1155/2020/4326840 ◽

2020 ◽

Vol 2020 ◽

pp. 1-12

Author(s):

Miguel Angel De los Santos-Santos ◽

Rosendo Balois-Morales ◽

José Orlando Jiménez-Zurita ◽

Irán Alia-Tejacal ◽

Graciela Guadalupe López-Guzmán ◽

...

Keyword(s):

Antioxidant Activity ◽

Weight Loss ◽

Vitamin C ◽

Shelf Life ◽

Economic Value ◽

Titratable Acidity ◽

Soluble Solids ◽

Total Phenolic ◽

High Concentration ◽

Dpph Method

The soursop fruit (Annona muricata L.) is a crop of significant economic value for Nayarit, which is characterized by having a bittersweet taste, making it attractive to the consumer. However, the soursop has rapid maturation which causes a short shelf life. Several postharvest management techniques have been applied to reduce its metabolic processes, such as refrigeration, use of 1-methylcyclopropene (1-MCP), and controlled and modified atmospheres. In recent years, polysaccharide-based coatings have been applied to fruits. Therefore, the objective of this investigation was to evaluate the physicochemical and biochemical changes, as well as the antioxidant activity of soursop fruits with a mucilage-based coating (2%), stored at 22°C and 15°C with a 90% RH. Weight loss, firmness, color, soluble solids, acidity, pH, phenols, flavonoids, vitamin C, and antioxidant activity were evaluated. The results obtained in the coated fruits stored at 15°C showed lower weight loss (6.4%), lower firmness (29.7 N), higher TSS concentration (10.4°Bx), and lower acidity (0.38%) compared with the uncoated fruits. The total phenolic content decreased in coated fruits stored at 22°C (54.3 mg EGA/100 g FW). The highest antioxidant activity (DPPH method) was recorded in fruits coated and stored at 15°C with an average value of 257.9 mg EAA/100 g FW. Moreover, a high concentration of vitamin C was observed in fruits coated and stored at 15°C and 22°C (20.5 and 17.5 mg EAA/100 g FW), concluding that the coating based on roselle mucilage (2%) in combination with a temperature of 15°C prevents weight loss, decreases titratable acidity, and increases the content of phenols and vitamin C. Furthermore, an increase in the shelf life up to eight days and in the antioxidant activity at the maturity of consumption was observed in the fruits coated with 2% roselle mucilage stored at 15°C.

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Effect of nano zeolite and potassium permanganate on shelf life and quality of cut apple

International Journal of Life Sciences ◽

10.3126/ijls.v9i2.12050 ◽

2015 ◽

Vol 9 (2) ◽

pp. 55-60 ◽

Cited By ~ 4

Author(s):

Fereshteh Khosravi ◽

Mahdyeh Khosravi ◽

Elnaz Pourseyedi

Keyword(s):

Weight Loss ◽

Shelf Life ◽

Potassium Permanganate ◽

Life Sciences ◽

Titratable Acidity ◽

Fruit Weight ◽

Soluble Solids ◽

Total Soluble Solids ◽

Preserved Fruit

In the present study the extended storage life of cut apples (Red Delicious) examined using nano zeolite particles and potassium permanganate. Titratable acidity, total soluble solids, pH and weight loss was measured .Visual observations of fruits during storage were investigated. The results showed that pH, soluble solids and fruit weight loss has increased during storage. The acidity of fruits stored with nano zeolite was less decreased as compared with potassium permanganate. The growth of moulds on preserved fruit with nano zeolite was much less after 10 days of storage as compared with potassium permanganate.DOI: http://dx.doi.org/10.3126/ijls.v9i2.12050 International Journal of Life Sciences 9 (2) : 2015; 55-60

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Shelf-life, quality, safety evaluations of blueberry fruits coated with chitosan nano-material films

Scientific Reports ◽

10.1038/s41598-020-80056-z ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Yang Li ◽

Sami Rokayya ◽

Fuguo Jia ◽

Xin Nie ◽

Jingwen Xu ◽

...

Keyword(s):

Weight Loss ◽

Ascorbic Acid ◽

Shelf Life ◽

Storage Temperature ◽

Titratable Acidity ◽

Soluble Solids ◽

Microbiological Analysis ◽

Nano Coating ◽

Nano Material ◽

Yeasts And Molds

AbstractChitosan coating (B/CH) in addition with nano-material films as silicon (B/CH/Nano-SiO2) and titanium (B/CH/Nano-TiO2) dioxides were developed and applied to detect potential changes on fresh blueberry fruits in commercial storage temperature. Physical, mechanical parameters (weight loss, decay rate, colour index and firmness), phytochemical contents (ascorbic acid, acidity, soluble solids concentration, titratable acidity, and repining index), phenolic enzymes (peroxidase and polyphenoloxidase), pigments (anthocyanin) and microbiological analysis (mesophilic aerobic, yeasts and molds populations) were detected every other day until the end of the experiment. Nano-coating based on (Nano-TiO2) established the most suitable values for weight loss (2.22%), titratable acidity (0.45% citric acid), and repining index. (B/CH/Nano-TiO2) reported a gradual increase in polyphenoloxidase and peroxidase enzyme activities (659.45 U/min g) and (20.39 U/min g), respectively. While, (B/CH/Nano-SiO2) established the slightest change in acidity (2.61), anthocyanin (105.19 cyanidin-3-O-glucoside mg/100 g FW) and minimized the growth of mesophilic aerobic, yeasts, and molds populations (3.73–3.98 log CFU/g), respectively. (B/CH) films maintained lightness (6.80% loss) and recorded the highest ascorbic acid content (7.34 g/100 g FW). Therefore, chitosan nano-material films can maintain nutrients and control the microbial growth for extending the shelf life of fresh blueberry fruits.

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Evaluation of the Effect of Different Modified Atmosphere Packaging Box Liners on the Quality and Shelf Life of ‘Friar’ Plums

HortTechnology ◽

10.21273/horttech.18.2.261 ◽

2008 ◽

Vol 18 (2) ◽

pp. 261-265 ◽

Cited By ~ 24

Author(s):

Celia M. Cantín ◽

Carlos H. Crisosto ◽

Kevin R. Day

Keyword(s):

Weight Loss ◽

Shelf Life ◽

Cold Storage ◽

Skin Color ◽

Chilling Injury ◽

Modified Atmosphere Packaging ◽

Titratable Acidity ◽

Soluble Solids ◽

Modified Atmosphere ◽

Low Oxygen

The influence of modified atmosphere packaging (MAP) on quality attributes and shelf life performance of ‘Friar’ plums (Prunus salicina) was studied. Plums were stored at 0 °C and 85% relative humidity for a 60-day period in five different box liners (LifeSpan L316, FF-602, FF-504, 2.0% vented area perforated, and Hefty liner) and untreated (control). Flesh firmness, soluble solids concentration, titratable acidity, and pH were unaffected by the box liners. Fruit skin color changes were repressed on plums packed in box liners that modified gas levels and weight loss was reduced by the use of any of the box liners. Plums packed without box liners (bulk-packed) had ≈6% weight loss. High carbon dioxide (CO2) and low oxygen (O2) levels were measured in boxes with MAP box liners (LifeSpan L316, FF-602, and FF-504). Percentage of healthy fruit was unaffected by any of the treatments during the ripening period (shelf life) after 45 days of cold storage. However, after 60 days of cold storage, fruit from the MAP box liners with higher CO2 and lower O2 levels had a higher incidence of chilling injury (CI) symptoms, evident as flesh translucency, gel breakdown, and “off flavor” than fruit from the other treatments. Overall, results indicate that the use of MAP box liners is recommended to improve market life of ‘Friar’ plums up to 45 days cold storage. However, the use of box liners without gas control capability may lead to CI symptoms in fruit cold-stored for longer periods.

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Novel Edible Coating of Starch-Based Stenospermocarpic Mango Prolongs the Shelf Life of Mango “Ataulfo” Fruit

Journal of Food Quality ◽

10.1155/2020/1320357 ◽

2020 ◽

Vol 2020 ◽

pp. 1-9 ◽

Cited By ~ 2

Author(s):

Sara Elena Hernández-Guerrero ◽

Rosendo Balois-Morales ◽

Yolotzin Apatzingán Palomino-Hermosillo ◽

Graciela Guadalupe López-Guzmán ◽

Guillermo Berumen-Varela ◽

...

Keyword(s):

Weight Loss ◽

Shelf Life ◽

Titratable Acidity ◽

Added Value ◽

Soluble Solids ◽

Edible Coatings ◽

Tropical Fruits ◽

Factorial Experimental Design ◽

Solids Content ◽

Design Weight

Edible coatings based on 2% starch (w/v) extracted from tropical fruits were applied on stenospermocarpic mango fruits with the objective to prolong its shelf life during storage and give them an added value since they have no commercial value. In this regard, stenospermocarpic mangoes were coated with starch from banana “Pear” (T1 and T2), starch from soursop (T3 and T4), and starch from stenospermocarpic mango (T5 and T6), and two uncoated control treatments (T7 and T8). The fruit of T1, T3, T5, and T7 treatments were stored for 15 days (10 days at 10 ± 2°C and then at 22 ± 2°C for 5 days). The fruit of T2, T4, T6, and T8 treatments were stored for 10 days at 22 ± 2°C. Data were analyzed with a 4×2 factorial experimental design. Weight loss (g), firmness (N), total soluble solids content (%), titratable acidity (%), and color (L∗h∗C∗) were evaluated. The fruit coated with mango starch (T5) showed less weight loss (2.57%), greater firmness (18.6 N), as well as a high content of TSS (28.76%) compared with the control. The T5 extended the shelf life of the fruit up to 15 days (10 days at 10 ± 2°C and 5 days at 22 ± 2°C).

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Effect of Aloysia citrodora Essential Oil on Biochemicals, Antioxidant Characteristics, and Shelf Life of Strawberry Fruit during Storage

Metabolites ◽

10.3390/metabo11050256 ◽

2021 ◽

Vol 11 (5) ◽

pp. 256

Author(s):

Habib Shirzad ◽

Abolfazl Alirezalu ◽

Kazem Alirezalu ◽

Milad Yaghoubi ◽

Bahareh Ghorbani ◽

...

Keyword(s):

Weight Loss ◽

Essential Oil ◽

Shelf Life ◽

Titratable Acidity ◽

Soluble Solids ◽

Total Phenolic ◽

Strawberry Fruit ◽

Dpph Assay ◽

Enzymes Activity ◽

Antioxidant Characteristics

Strawberry fruits are highly susceptible to cold burning, resulting in low storage periods at low temperatures. Plant extracts or essential oils (EOs) can potentially be used as preservatives in fruits throughout the refrigerated period. In the present study, the biochemicals, antioxidant characteristics, and shelf life of treated strawberries with Aloysia citrodora essential oil (ACEOs) were evaluated during keeping time. The treatments were produced as follows: T1, control; T2, 250 ppm ACEOs; T3, 500 ppm ACEOs; and T4, 750 ppm ACEOs. Total soluble solids (TSS), weight loss, titratable acidity (TA), antioxidant activity (DPPH assay), total phenolic (TPC), flavonoid and anthocyanin contents (TFC), and enzymes activity (peroxidase and ascorbate peroxidase) were evaluated during the refrigerated period (5 °C with relative humidity of 85–90% for 20 days). The results revealed that weight loss and TA were reduced in all treatments during storage, being that the rates were lower in samples treated with ACEOs. TPC, TFC, TSS, antioxidant, and enzymes activity were higher in treated fruits than control.

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