Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Prestorage conditioning, diphenylamine improve condition of 'honeycrisp' apple

27.03.2014

Scientists determine methods for improving resistance to controlled-atmosphere-related injury

Since the introduction of 'Honeycrisp' apples in 1991, the variety has become a consumer favorite for its unusual texture and delicious flavor. Honeycrisp has increased in popularity with growers as well; Michigan, New York, and Washington boast significant numbers of 'Honeycrisp' orchards.

As the growing area dedicated to the variety has grown, the need to find better methods for improving storage performance has become more important to growers. Because 'Honeycrisp' is very sensitive to low temperatures and can be damaged by controlled-atmosphere conditions, long-term storage of the apples can be challenging.

Carolina Contreras and Randy Beaudry from the Department of Horticulture at Michigan State University and Nihad Alsmairat from the Department of Horticulture and Crop Science at the University of Jordan published a study in HortScience that revealed some important information for apple producers. "Our work was conducted in two phases," Beaudry explained.

"The first phase was designed to determine whether 'Honeycrisp' apples were susceptible to controlled-atmosphere injury, to determine the relative influence of O2 and CO2, and to identify a treatment combination that would reliably generate symptoms so that control measures could be subsequently evaluated." In the second phase, the scientists evaluated options for avoiding injury to 'Honeycrisp' during controlled-atmosphere storage. Fruit were conditioned at 3º C, 10º C, and 20º C for 5 days and then exposed to one of nine different storage treatments.

In the first experiment, 'Honeycrisp' exhibited a high sensitivity to both low oxygen and elevated CO2 levels. "We found that the controlled-atmospheres used induced injuries typical of those associated with CO2 (i.e., small brown lesions and associated lens-shaped cavities) and also larger dark brown lesions with often irregular margins," the authors said. "The extent of the injury was higher for those fruit in an atmosphere with elevated CO2 for each level of O2."

Subsequent experiments took place over 3 years, during which the researchers reproduced the controlled-atmosphere (CA) injury from the preliminary study with varied intensity. Although the researchers observed high variability between orchards and years, they found two treatments that effectively controlled the CA injury. "We found that the brown lesions in the cortex were completely suppressed by DPA application, even when the prestorage conditioning temperature was 3º C," Beaudry said. "The incidence of cavities ranged from 0.1% to 0.3% under the same DPA treatment. On the other hand, the most affected treatment was 3/3 followed by 3/0, 21/0, and 21/ 0 plus 1-MCP."

The authors noted that, while there is good progress toward determining optimal storage recommendations for 'Honeycrisp' additional studies are still warranted. "For instance, although the 7-day prestorage conditioning treatments provided some protection against the development of CA injury, shorter durations should be investigated to prevent quality loss resulting from excessive ripening, which could cause increased skin greasiness and undesirable flavor profile."

The study includes additional recommendations for handling 'Honeycrisp' in prestorage conditions.

###

The complete study and abstract are available on the ASHS HortScience electronic journal web site: http://hortsci.ashspublications.org/content/49/1/76.abstract

Founded in 1903, the American Society for Horticultural Science (ASHS) is the largest organization dedicated to advancing all facets of horticultural research, education, and application. More information at ashs.org

Michael W. Neff | EurekAlert!

Further reports about: ASHS HortScience Horticultural Science conditioning conditions injury lesions levels recommendations skin variety

More articles from Agricultural and Forestry Science:

nachricht Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University

nachricht New findings about the deformed wing virus, a major factor in honey bee colony mortality
11.11.2016 | Veterinärmedizinische Universität Wien

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

Im Focus: Bacterial Pac Man molecule snaps at sugar

Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.

The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

Water - as the underlying driver of the Earth’s carbon cycle

17.01.2017 | Earth Sciences

Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

17.01.2017 | Materials Sciences

Smart homes will “LISTEN” to your voice

17.01.2017 | Architecture and Construction

VideoLinks
B2B-VideoLinks
More VideoLinks >>>