Changes in Guavas of Three Maturity Stages in Response to Temperature and Relative Humidity

The storage life of blackberry fruit is generally `2 to 3 days when stored at 1C. This study was done to determine the maximum storage life among erect blackberry cultivars, and to determine storage temperature effects on storage life. Shiny black fruit from `Navaho', `Arapaho', and `Shawnee' cultivars were stored at 2C, 5C, or 10C for 20, 14, and 7 days, respectively. At any temperature. only 10-20% of `Navaho' fruit had decay, while 30-50% of `Arapaho' and 40-70% of `Shawnee' fruit had decay. Weight loss was 3-5% depending on temperature and was not different among cultivars. Soluble solids concentration did not change during storage but titratable acidity decreased in all cultivars for fruit held at all temperatures. Anthocyanin content increased during storage in `Shawnee' and `Navaho' but not in `Arapaho' fruit. Results indicate that `Navaho' fruit have a longer shelflife than other blackberry cultivars.

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Postharvest storage of three chayote (Sechium edule (Jacq.) Sw.) varieties

Scientia Agropecuaria ◽

10.17268/sci.agropecu.2021.027 ◽

2021 ◽

Vol 12 (2) ◽

pp. 239-247

Author(s):

Yeimy Ramírez-Rodas ◽

Lourdes Arévalo-Galarza ◽

Jorge Cadena-Iñiguez ◽

Adriana Delgado-Alvarado ◽

Lucero Ruiz-Posadas ◽

...

Keyword(s):

Weight Loss ◽

Fruit Quality ◽

Chilling Injury ◽

Titratable Acidity ◽

Soluble Solids ◽

Germplasm Bank ◽

Total Sugars ◽

Sechium Edule ◽

Important Variety ◽

Different Temperatures

The consumer demand for chayote (Sechium edule (Jacq.) Sw.) fruits has increased in recent years, virens levis being the most important variety, although other chayote varieties are gaining importance such as nigrum xalapensis and n. spinosum. However, the postharvest behavior of these varieties is different, so it is important to evaluate the factors that limit the shelf life of each variety. Therefore, in this study, fruits of each variety from the Mexican National Germplasm Bank of Sechium edule were used. The following fruit quality variables were evaluated: weight loss, humidity (%), color, chlorophyll, titratable acidity, total soluble solids (TSS), total sugars, and stomatal characteristics. In addition, the storage potential of each variety was evaluated for two weeks at different temperatures, 7°, 13° (85% RH) and 24 °C (60% RH), with the application of 1-methylcyclopropene (1-MCP). The variables evaluated were viviparism, disease severity, weight loss, dehydration and chilling injury (CI). The fruits of n. xalapensis and n. spinosum have a higher content of chlorophylls and carotenoids, but similar contents of TSS, acidity and total sugars than v. levis fruits. The use of 1-MCP reduced viviparism in all varieties, and the severity of blisters was higher in v. levis. The fruits of the three varieties presented severe CI when stored at 7 °C but the most susceptible to dehydration and diseases severity is n. spinosum.

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

Turkish Journal of Agriculture - Food Science and Technology ◽

10.24925/turjaf.v8i2.504-510.3070 ◽

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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VARIATION IN FRUIT QUALITY CHARACTERISTICS OF PRICKLY PEARS (OPUNTIA SPECIES)

HortScience ◽

10.21273/hortsci.25.9.1173g ◽

1990 ◽

Vol 25 (9) ◽

pp. 1173g-1174

Author(s):

Joseph O. Kuti

Keyword(s):

Ascorbic Acid ◽

Fruit Quality ◽

Germplasm Collection ◽

Titratable Acidity ◽

Quality Characteristics ◽

South Texas ◽

Soluble Solids ◽

Opuntia Species ◽

Standard Procedures ◽

Prickly Pears

This paper presents the results from a two-year study on fruit quality characteristics of prickly pear accessions belonging to five Opuntia species (O. ficus-indica, O. hyptiacantha, O. inermis, O. linderheimeri and O. megacantha) from a germplasm collection at Texas A&I University. Fruit soluble solids, pH, titratable acidity and ascorbic acid contents were determined using standard procedures. Significant differences in fruit soluble solids and ascorbic acid contents were observed. Accessions belonging to O. ficus-indica consistently had the highest soluble solids (> 12%) and ascorbic contents (>24mg/100g) while accessions belonging to O. lindheimeri consistently had the lowest soluble solids (<8%) and ascorbic acid contents (< 10mg/100g). Fruit acidity was generally low (<0.19%) for all the species. The results suggest potential for developing prickly pears for the fresh fruit market in south Texas.

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VARIATION IN FRUIT QUALITY CHARACTERISTICS OF PRICKLY PEARS (OPUNTIA SPECIES)

HortScience ◽

10.21273/hortsci.25.9.1173 ◽

1990 ◽

Vol 25 (9) ◽

pp. 1173G-1174

Author(s):

Joseph O. Kuti

Keyword(s):

Ascorbic Acid ◽

Fruit Quality ◽

Germplasm Collection ◽

Titratable Acidity ◽

Quality Characteristics ◽

South Texas ◽

Soluble Solids ◽

Opuntia Species ◽

Standard Procedures ◽

Prickly Pears

This paper presents the results from a two-year study on fruit quality characteristics of prickly pear accessions belonging to five Opuntia species (O. ficus-indica, O. hyptiacantha, O. inermis, O. linderheimeri and O. megacantha) from a germplasm collection at Texas A&I University. Fruit soluble solids, pH, titratable acidity and ascorbic acid contents were determined using standard procedures. Significant differences in fruit soluble solids and ascorbic acid contents were observed. Accessions belonging to O. ficus-indica consistently had the highest soluble solids (> 12%) and ascorbic contents (>24mg/100g) while accessions belonging to O. lindheimeri consistently had the lowest soluble solids (<8%) and ascorbic acid contents (< 10mg/100g). Fruit acidity was generally low (<0.19%) for all the species. The results suggest potential for developing prickly pears for the fresh fruit market in south Texas.

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Modified atmosphere packaging extending the storage life of 'douradão' peach

Revista Brasileira de Fruticultura ◽

10.1590/s0100-29452011005000006 ◽

2011 ◽

Vol 32 (4) ◽

pp. 1009-1017 ◽

Cited By ~ 1

Author(s):

Ligia Regina Radomille de Santana ◽

Benedito Carlos Benedetti ◽

José Maria Monteiro Sigrist ◽

Claire Isabel Grígoli de Luca Sarantopóulos

Keyword(s):

Weight Loss ◽

Cold Storage ◽

Chilling Injury ◽

Modified Atmosphere Packaging ◽

Storage Life ◽

Soluble Solids ◽

Modified Atmosphere ◽

Perishable Product ◽

Flesh Firmness ◽

Relevant Effect

'Douradão' peach is a perishable product and when cold stored is subject to chilling injury. The objective of the experiment was to evaluate the effect of modified atmosphere packaging (MAP) and cold storage on quality and storage life of these peaches. Fruits were packed in polypropylene (PP) trays and placed inside low density polyethylene (LDPE) bags (30, 50, 60, 75 μm thickness) with active modified atmosphere (10 kPa CO2 + 1.5kPa O2, balance N2). The control was made with peaches held in nonwrapped PP trays. Fruits were kept at 1 ± 1 °C and 90 ± 5% relative humidity (RH) for 28 days and CO2 and O2 within packages was monitored every two days. After 14, 21 and 28 days, samples were withdrawn from MAP and kept in air at 25 ± 1 °C and 90 ± 5% RH for ripening. On the day of removal from the cold storage and after 4 days, peaches were evaluated for weight loss, decay incidence, flesh firmness, woolliness incidence, soluble solids content (SSC), titratable acidity (TA) and juice content. The results showed that MAP had influence on reducing weight loss and prevented postharvest decay. MAP of 1-2 kPa O2 and 3-6 kPa CO2 at 1 °C (from 50 and 60 μm LDPE films) were effective for keeping good quality of 'Douradão' peaches during 28 days of storage, the ripe fruits showed reduced incidence of woolliness, adequate juiciness and flesh firmness. Packages of 30 and 75 μm LDPE films were ineffective for reducing woolliness during cold storage. MAP fruits showed lower SSC and no relevant effect on TA. Control fruits did not present marketable conditions after 14 days of cold storage.

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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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712 PB 388 PACKINGHOUSE OPERATIONS AFFECT PEACH QUALITY DURING STORAGE

HortScience ◽

10.21273/hortsci.29.5.535b ◽

1994 ◽

Vol 29 (5) ◽

pp. 535b-535

Author(s):

Armida Rodriguez-Felix ◽

Evelia Araiza-Lizarde ◽

Monica A. Villegas-Ochoa ◽

Elsa Brineas-Taddei

Keyword(s):

Weight Loss ◽

Cold Storage ◽

Skin Color ◽

Titratable Acidity ◽

Quality Characteristics ◽

The Other ◽

Soluble Solids ◽

Additional Weight ◽

Highest Weight ◽

Representative Points

`Flordaprince' peach quality characteristics were evaluated during cold storage after passing thru different packinghouse operations. Fruits were sampled at three points in a commercial packinghouse as follows: (A) upon arrival at a peach packinghouse, (B) after hydrocooling, and (C) after grading and sorting. After sampling, fruits were stored at 2 C (90 % R.H.) for 0, 15, and 30 days. Following the cold storage periods, fruits were transferred to 20 C. Quality characteristics evaluated during cold storage or marketing conditions consisted of weight loss, firmness, skin color (hue), total soluble solids, titratable acidity, respiration rate, and ethylene production. Peaches stored for 27 days at 2 C had up to 40% weight loss. Additional weight loss was observed during marketing conditions at 20 C (up to 70 % weight loss). Selected peaches after grading and sorting (point C) had the highest weight loss during storage at 2 C, as compared to the other two sampling points. Flesh firmness decreased significantly after 3 days storage at 20 C in all representative points. Weight loss and firmness were the quality attributes that mainly affect peach storage life.

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Influence of Putrescine Application on Storability, Postharvest Quality and Antioxidant Activity of Two Iranian Apricot (Prunus armeniaca L.) Cultivars

Notulae Scientia Biologicae ◽

10.15835/nsb529041 ◽

2013 ◽

Vol 5 (2) ◽

pp. 212-219 ◽

Cited By ~ 15

Author(s):

Gholamhossein DAVARYNEJAD ◽

Mehdi ZAREI ◽

Elham ARDAKANI ◽

Mohamad Ebrahim NASRABADI

Keyword(s):

Antioxidant Activity ◽

Weight Loss ◽

Ascorbic Acid ◽

Total Phenolics ◽

Titratable Acidity ◽

Maturity Index ◽

Soluble Solids ◽

Fruit Firmness ◽

Postharvest Storage ◽

Total Soluble Solids

The limited postharvest storage life of apricot is the focus of this study. Presenting a solution to improve the postharvest storage of studied apricot cultivars is the goal. Studding the effect of different concentration of postharvest putrescine on quality attributes and antioxidant activity of two apricot cultivars during storage is the approach taken. The two apricot cultivars (‘Lasgerdi’ and ‘Shahrodi’) were harvested at the commercial ripening stage, and fruits were immerged in 1, 2, 3 and 4 mM putrescine as well as distilled water (control) for 5 min, then fruits were packed in boxes with polyethylene cover and stored at 4°C and 95% relative humidity for 20 days. The changes in weight loss, fruit firmness, total soluble solids, titratable acidity, pH, maturity index, ascorbic acid, total phenolics and antioxidant activity were estimated after 0, 5, 10, 15 and 20 days during storage. The results showed that the weight loss, total soluble solids, pH and maturity index increased significantly while the fruit firmness, titratable acidity, ascorbic acid, total phenolics and antioxidant activity decreased significantly during storage for both cultivars. During storage, a significant difference between control and putrescine treatments in all measured parameters is observed. The putrescine treatments reduced significantly the weight loss and maintained their firmness. In this condition, the highest and lowest of titratable acidity, ascorbic acid, total phenolics and antioxidant activity were observed in treatments of 4 mM putrescine and control, respectively. The data revealed that the quality of apricot fruits was improved by the use of putrescine treatment due to its effect on delaying the ripening processes.

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