Influence of Harvest Dates on Quality, Storage Capacity and Sensory Attributes of European Plum cv. Green Gage

2009 ◽  
Vol 15 (6) ◽  
pp. 527-534 ◽  
Author(s):  
M. Guerra ◽  
M.A. Sanz ◽  
P.A. Casquero
Keyword(s):  
Storage Time ◽  
Storage Capacity ◽  
Harvest Date ◽  
Consumer Acceptance ◽  
Nondestructive Measurement ◽  
Harvest Dates ◽  
Quality Threshold ◽  
And Storage ◽  
Early Harvest ◽  
Minimum Quality

The aim of this work was to determine storage capacity and changes in quality and consumer acceptance in plum harvested at different dates as well as to determine which instrumental parameters show good correlation with consumer acceptance and sensory properties. Both harvest date and storage time played a significant role in quality and sensory characteristics. Incidence of internal breakdown (IB) was significantly higher in fruit harvested last and increased significantly until the end of storage. Market life of ‘Green Gage’ plum varies from 20 days in fruit harvested on the last harvest date to 40 days in fruit harvested on earlier dates. When storage is needed, firmness, the best harvest index, should be higher than 42 N in order to extend market life and prevent IB damages in ‘Green Gage’ plums. However, fruit from early harvest dates has a lower consumer acceptance than fruit from late harvest dates (low TSS:TA). Thus, a minimum quality threshold based on TSS:TA (18.9) has been established over which consumer liking for European plums cv. Green Gage improves significantly. High linear regression between a* and TSS:TA would allow to use the a* color parameter as a nondestructive measurement to estimate consumer acceptance.

Studies to extend the dormancy of white yam (Dioscorea alata L)

1969 ◽  
Vol 74 (3) ◽  
pp. 213-219
Author(s):  
Maddineni M. Rao ◽  
Calixte George
Keyword(s):  
Water Treatment ◽  
Gibberellic Acid ◽  
Dioscorea Alata ◽  
Dormancy Period ◽  
Harvest Dates ◽  
White Yam ◽  
And Storage ◽  
Early Harvest ◽  
Storage Temperatures ◽  
Control Water

Two experiments were conducted in 1987-88 in St. Lucia with a view to extend the dormancy of white yam (Dioscorea alata L). Experiment 1 compared different harvest dates, different storage temperatures and presence or absence of the tuber "head" in cultivar Oriental. Experiment 2 studied the effect of gibberellic acid (GA) solution (1000 p/m) on the dormancy of different cultivars of white yam. Tubers from the early harvest (15 November) had the longest dormancy period (over 7 months), which decreased progressively with delay in harvesting. Storing yam tubers at 20 ± 2°C extended the dormancy by over 5 months as compared to storing them at 30 ± 2°C. The presence or absence of the tuber "head" had no effect. The interaction effects due to dates of harvest X storage temperatures and storage temperatures X manipulation were significant. Cultivars of white yam differed significantly in their dormancy period. Treating the harvested tubers with GA (1000 p/m) for 2 hours extended the dormancy by over 4 months as compared to that of the control (water) treatment.

Kiwifruit in Syrup: Consumer Acceptance, Purchase Intention and Influence of Processing and Storage Time on Physicochemical and Sensory Characteristics

2015 ◽  
Vol 8 (11) ◽  
pp. 2268-2278 ◽  
Author(s):  
M. García-Quiroga ◽  
M. Nunes-Damaceno ◽  
M. Gómez-López ◽  
E. Arbones-Maciñeira ◽  
N. Muñoz-Ferreiro ◽  
...  
Keyword(s):  
Purchase Intention ◽  
Storage Time ◽  
Consumer Acceptance ◽  
Sensory Characteristics ◽  
Processing And Storage ◽  
And Storage

scholarly journals Influence of harvest date and storage conditions on the content of chlorophyll pigments in pear peels

2012 ◽  
Vol 24 (1) ◽  
pp. 91-95 ◽  
Author(s):  
Jan Błaszczyk
Keyword(s):  
Shelf Life ◽  
Chlorophyll A ◽  
Significant Influence ◽  
Storage Time ◽  
Storage Conditions ◽  
Harvest Date ◽  
Controlled Atmosphere ◽  
Chlorophyll Pigments ◽  
Controlled Atmospheres ◽  
And Storage

Influence of harvest date and storage conditions on the content of chlorophyll pigments in pear peelsDuring each season, pears were harvested on three dates at four-day intervals. The fruit was stored for 150 days in temperatures of 0-0.5°C in common cold storage (NA - normal atmosphere) and also in controlled atmospheres (CA) of different gaseous content: 0.8% CO2+ 2% O2, 2% CO2+ 2% O2and 3% CO2+ 3% O2. After removing the pears from storage they were additionally stored for seven days in a temperature of 17°C - simulated shelf life. The content of chlorophyll pigments (chlorophyll a + b) was determined after each harvest date, storage time and simulated shelf life. Based on the results, I concluded that the a + b chlorophyll content in the peel of both pear cultivars significantly decreased along with the subsequent harvest date. In addition, the storage conditions had a significant influence on the studied factor. Compared to the normal atmosphere, the controlled atmosphere conditions were more efficient in slowing the yellowing of the fruit due to reduced chlorophyll degradation. The atmosphere consisting of 3% CO2+ 3% O2or 2% CO2+ 2% O2was more favourable for the higher content of chlorophyll a + b in the peel of ‘Conference’ pears than 0.8% CO2+ 2% O2. In the case of ‘Concorde’ pears, the influence of particular compositions of CA on the content of chlorophyll a + b changed over the years.

scholarly journals Stilbenes in grapes and wines of Tannat, Marselan and Syrah from Uruguay

OENO One ◽  
2020 ◽  
Vol 54 (1) ◽  
pp. 27-36
Author(s):  
Guzmán Favre ◽  
Diego Piccardo ◽  
Gómez-Alonso Sergio ◽  
José Pérez-Navarro ◽  
Esteban García-Romero ◽  
...  
Keyword(s):  
Storage Time ◽  
Solid Phase ◽  
Multiple Reaction Monitoring ◽  
Grape Cultivar ◽  
Grape Berries ◽  
Harvest Dates ◽  
Degree Of Maturity ◽  
The Stability ◽  
And Storage ◽  
Do So

Aim: The aim of the study was to investigate the stilbene composition of grapes and wines of the Vitis vinifera cultivars Tannat, Marselan and Syrah cultivated in Uruguay. The effects of delaying the harvest on stilbene concentrations were determined, and the stability of stilbenes during wine storage was assessed.Methods and results: Stilbene concentrations were determined in the grapes and wines of two vintages (2015 and 2016) and two harvest dates for each cultivar. Vinification was carried out by traditional maceration, and samples of the wines of each vintage were analysed in the period from 3 months after devatting to up to 24 months later. After solid-phase extraction, stilbenes were identified and quantified by HPLC-ESI-MS/MS using a multiple reaction-monitoring approach. In the grape berries, stilbene concentrations were between 1.6 and 7.7 mg/kg, depending on grape cultivar, growing season, and in Syrah, harvest date. In the wines, stilbene concentrations were initially between 0.9 and 5.0 mg/L, being highest in Syrah, lowest in Marselan, and intermediate in Tannat. Stilbene concentrations in the Marselan wines were lower than expected based on stilbene concentrations in the grapes from which they were produced, suggesting poor extraction during winemaking. Total stilbene concentrations remained very stable during the analytical period.Conclusions: Delaying the harvest does not necessarily increase the stilbene content of grapes, but it can do so significantly, as shown for Syrah. For some grape cultivars, such as Marselan, poor extraction of stilbenes during winemaking can limit their concentrations in the resulting wines.Significance and impact of the study: The results of this study show the relevance of grape cultivar, degree of maturity and storage time may have into stilbenes. They provide reference data on the stilbene composition of grapes and wines produced under Uruguayan winegrowing conditions. The high stability of stilbenes during wine storage is relevant for consumers interested in red wine as a source of bioactive compounds. In memory of Prof. Isidro Hermosín-Gutiérrez.

scholarly journals Harvest Date Effect on Yield and Controlled-atmosphere Storability of Short-day Onions

HortScience ◽  
2004 ◽  
Vol 39 (7) ◽  
pp. 1623-1629 ◽  
Author(s):  
George E. Boyhan ◽  
Albert C. Purvis ◽  
William C. Hurst ◽  
Reid L. Torrance ◽  
J. Thad Paulk
Keyword(s):  
Storage Conditions ◽  
Linear Increase ◽  
Harvest Date ◽  
Controlled Atmosphere ◽  
Degree Days ◽  
Short Day ◽  
Harvest Dates ◽  
Effect On Yield ◽  
And Storage ◽  
Specific Number

This study was undertaken to evaluate the effect of harvest date on yield and storage of short-day onions in controlled-atmosphere (CA) storage conditions. In general, harvest yields increased with later harvest dates. Yields of jumbo (>7.6 cm) onions primarily showed a quadratic or cubic response to harvest date, first increasing and then showing diminished or reduced marginal yields. Medium (>5.1 to ≤7.6 cm) onions generally showed diminished yield with later harvests as jumbos increased. Neither days from transplanting to harvest nor calculated degree days were reliable at predicting harvest date for a particular cultivar. Cultivars (early, midseason, and late maturing) performed consistently within their harvest class compared to other cultivars for a specific year, but could not be used to accurately predict a specific number of days to harvest over all years. Only three of the eight statistical assessments of percent marketable onions after CA storage were significant with two showing a linear increase with later harvest date and one showing a cubic trend, first increasing, then decreasing, and finally increasing again based on harvest date.

scholarly journals Harvest Date and Storage Quality of Herbaceous Perennials

HortScience ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 573-576
Author(s):  
Anne M. Hanchek ◽  
Arthur C. Cameron
Keyword(s):  
Harvest Date ◽  
Storage Quality ◽  
Herbaceous Perennials ◽  
Gypsophila Paniculata ◽  
Harvest Dates ◽  
And Storage ◽  
Dicentra Spectabilis

The effect of harvest dates between September and December on regrowth after storage of field-grown Coreopsis grandiflora Hogg × Sweet `Sunburst' and `Sunray', Geum quellyon Sweet `Mrs. Bradshaw', Gypsophila paniculata L. `Snowflake', Iberis sempervirens L. `Snowflake', and Dicentra spectabilis (L.) Lem. crowns was determined. After 0 to 7 months of storage at 0C, stored crowns were repotted and grown in a greenhouse. Plants from later harvests were of higher quality than those from earlier harvests, showing higher rates of survival after longer storage periods, less mold development in storage, and stronger regrowth after storage. Late field harvest is recommended for optimum storage quality.

scholarly journals Harvest Date Effects on Maturity, Quality, and Storage Disorders of `Honeycrisp' Apples

HortScience ◽  
2005 ◽  
Vol 40 (1) ◽  
pp. 164-169 ◽  
Author(s):  
Christopher B. Watkins ◽  
Mustafa Erkan ◽  
Jacqueline F. Nock ◽  
Kevin A. Iungerman ◽  
Randolph M. Beaudry ◽  
...  
Keyword(s):  
Storage Temperature ◽  
Titratable Acidity ◽  
Harvest Date ◽  
Soluble Solids ◽  
Harvest Dates ◽  
Wide Range ◽  
Soft Scald ◽  
And Storage ◽  
Storage Temperatures ◽  
Storage Disorders

`Honeycrisp' is a new apple [Malus sylvestris (L.) Mill. var. domestica (Borkh.) Mansf.] cultivar that has been planted extensively in North America, but the storage disorders soggy breakdown and soft scald have resulted in major fruit losses. The effects of harvest date and storage temperature on fruit quality and susceptibility of fruit to these disorders have been investigated in Michigan, New York, and Maine. Internal ethylene concentrations were variable over a wide range of harvest dates, and a rapid increase in autocatalytic ethylene production was not always apparent. The starch pattern index, soluble solids content, titratable acidity and firmness also appear to have limited use as harvest indices. Development of soggy breakdown and soft scald is associated with later harvest dates and storage of fruit at temperatures of 0 to 0.5 °C compared with higher storage temperatures. It is recommended that `Honeycrisp' be stored at 3 °C, although storage disorders still can occur at this temperature if fruit are harvested late. In addition, greasiness development may be worse at higher storage temperatures.

Postharvest needle abscission resistance of balsam fir (Abies balsamea) is modified by harvest date

2014 ◽  
Vol 44 (11) ◽  
pp. 1394-1401 ◽  
Author(s):  
Mason T. MacDonald ◽  
Rajasekaran R. Lada ◽  
R. Scott Veitch ◽  
Arumugam Thiagarajan ◽  
Azure D. Adams
Keyword(s):  
Abscisic Acid ◽  
Cold Acclimation ◽  
Abies Balsamea ◽  
Harvest Date ◽  
Balsam Fir ◽  
Membrane Injury ◽  
Needle Retention ◽  
Harvest Dates ◽  
International Demand ◽  
Early Harvest

Earlier harvest dates have become necessary for Canadian Christmas tree producers to meet international demand, though by harvesting these trees early they may experience poor needle retention. The objective of this study is to understand the effect of harvest date on needle retention and link those changes to cold acclimation. In one experiment, balsam fir trees with varied needle abscission resistance (NAR) were collected in October and in January and monitored for needle retention. This was repeated for 3 years. In a second experiment, 45 branches were collected each month from September to January and monitored for needle retention, xylem pressure, membrane injury, capacitance, and accumulation of galactose, raffinose, and abscisic acid. High-NAR trees had little improvement in needle retention from October to January, whereas low-NAR trees had significantly improved needle retention from October to January. Between September and January, there was an 85% increase in raffinose, 147% increase in galactose, 80% increase in abscisic acid, and 62% decrease in stem capacitance. Early harvest was not detrimental for all trees, and it appears that cold acclimation is linked to postharvest needle abscission, though cold acclimation does not adequately explain differences between NAR classes.

Sign in / Sign up

Export Citation Format

Share Document