EurekaMag.com logo
+ Site Statistics
References:
47,893,527
Abstracts:
28,296,643
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Estimates of mechanization effects on fresh blueberry quality






Applied engineering in agriculture 12(1): 21-26

Estimates of mechanization effects on fresh blueberry quality

Fresh market blueberries are usually hand picked so that they will possess high quality, long shelf life, and good consumer appeal. Continuing expansion of U.S. production and markets for fresh blueberries requires that mechanical harvesting methods be developed that provide berries having high quality. In 1992 tests, 'Bluecrop' berries that were commercially hand picked had an average of 77% of the berries either damage free or with slight internal bruising after sorting. Conventional mechanical harvesters had an average of 22% of the berries that were damage free or slightly bruised. In 1993 tests, an experimental harvester, that required the bushes to be divided into a V-shape during the shaking operation and handled the berries gently, had an average of 68% of the berries that were damage free or slightly bruised. Drop test evaluated berry bruise sensitivity and identified safe cushioning for packing lines and harvesters. Extensive bruising resulted when drop height to a hard surface exceeded 150 mm (6 in.). Cushioning materials were identified that prevented bruising for drop heights as great as 0.6 to 1.2 m (24 to 48 in.) on packing lines or harvesters.


Accession: 002831282



Related references

Brown, G.; Schulte, N.; Peterson, D.; Timm, E.; Beaudry, R.; Hancock, J.; Takeda, F., 1993: Estimates of mechanization effects on fresh blueberry quality. Paper er 1993 (931602)

Lenartowicz, W.; Zbroszczyk, J.; Plocharski, W., 1990: The quality of highbush blueberry fruit part i. fresh fruit quality of six highbush blueberry cultivars and their suitability for freezing. Basic chemical composition and physical characteristics of the fruits of six highbush blueberry cultivars were studied, as well as the quality of frozen products obtained from them. The following cultivars were included: Bluecrop, Collins, Earlybl...

Cherel, P.; Glénisson, J.; Figwer, P.; Pires, J.; Damon, M.; Franck, M.; L.R.y, P., 2011: Updated estimates of HAL n and RN- effects on pork quality: fresh and processed loin and ham. A 1000-pig F2 intercross QTL detection experimental population was generated using two commercial sire lines. Independent carriers of HAL n and RN- mutations (10% and 14%, respectively) were included in this population as control genotypes. The ef...

Peterson, D.; Wolford, S.; Timm, E.; Takeda, F., 1997: Fresh market quality blueberry harvester. An experimental mechanical harvester (V45) was developed that utilized an angled double-spiked-drum shaker, a cane dividing and positioning system, and cushioned catching surfaces to harvest fresh market quality blueberries. With the V45, ground l...

Singh, R.P.; Heldman, D.R., 1975: Factors influencing fresh market blueberry quality. The effects on the shelf-life of blueberries were assessed of surface moisture removal by exposure to air streams at 38 deg -50 deg C and then 19 deg -28 deg , each for 2 min, followed by storage at 1.7 deg -15.6 deg for 7 days. With cooling-air t...

Kader, F.; Rovel, B.; Girardin, M.; Metche, M., 1997: Mechanism of browning in fresh highbush blueberry fruit (Vaccinium corymbosum L.). Partial purification and characterisation of blueberry polyphenol oxidase. The most efficient method for polyphenol oxidase (PPO) extraction from Highbush blueberry fruits was the preparation of an acetone powder. No activity was detected after direct extraction with phosphate buffer (pH 6.5) and detergents such as Trito...

Kader, F.; Rovel, B.; Girardin, M.; Metche, M., 1997: Mechanism of browning in fresh highbush blueberry fruit (Vaccinium corymbosum L). Role of blueberry polyphenol oxidase, chlorogenic acid and anthocyanins. Browning reactions which occurred after crushing fresh blueberries (Vaccinium corymbosum L) were followed by determination of chlorogenic acid colour density, polymer colour and the level of polymers. A polyphenol oxidase (PPO) activity plays a do...

Peterson, Donald L., 2003: Harvest mechanization progress and prospective for fresh market quality deciduous tree fruits. The availability of a skilled workforce to harvest tree fruits is a major concern of the U. S. fruit industry. Tightening of labor supplies has led to shortages in recent years. Competition-from countries with significantly lower labor costs is th...

Peterson, D.L., 2005: Harvest mechanization progress and prospects for fresh market quality deciduous tree fruits. Deciduous tree fruit crops such as apple (Malus domestica), peach (Prunus persica), and sweet cherry (Prunus avium) are not mechanically harvested for the fresh market. Attempts to mechanically harvest these fruits by mass removal techniques have...

Burns, J.C., 1981: Drying of fresh herbage samples for laboratory estimates of quality. Methods of drying herbage are discussed with reference to the requirements of a good drying technique, sample packaging for drying and changes in nonstructural and structural constituents and in in vitro DM disappearance.