Fruit Science Commons^™

Effects Of Thermal Processing On Peach Puree Of Different Cultivars: Analysis Of Biochemical Alteration, Non-Enzymatic Browning Reaction, And Color Changes, James Hayes

All Theses

The effects of pasteurization temperature and time on the change in seven peach puree variables over a 6-week accelerated shelf-life test (35°C) were evaluated. The variables of interest were three color measures [ L* (lightness), a* (redness), and b* (yellowness)]; two brown pigment measures [spectrophotometric absorption at 420 nm (Browning Index) and 443 nm (Hydroxymethylfurfural)]; °Brix; and pH). Puree was collected from three different cultivars (2 freestone and 1 clingstone) and puree samples from each cultivar were subjected to 20 combinations of pasteurization temperatures (70°C, 80°C, 90 °C, 100°C) and same hold times (0 minutes, 1 minute, 3 minutes, 5 …

Effects Of Fruit Position In Standard Place Pack Cartons And Gamma 1 Irradiation On The Postharvest Quality Of ‘Barnfield’ Navel Oranges, Karina Cruz Rodriguez (Friscia), José De Jesús Ornelas-Paz, Vrani Ibarra-Junquera, Maria Criselda Toto, Akanksha Jain, Anuradha Prakash

Food Science Faculty Articles and Research

The objective of this study was to determine if oranges in the top and bottom layers within a Standard Place Pack were impacted differently by irradiation after long-term storage. ‘Barnfield’ Navel oranges were packed in Standard Place Pack cartons and treated with 0, 0.15, or 1 kGy of gamma irradiation. The fruit were stored for 3 weeks at 5 °C and then for 1 week at 20 °C. After storage, the fruit from the top and bottom layers were separately evaluated for quality. The development of stem-end rind breakdown (SERB) was the main cause of quality loss and was greater …

Breeding For Resistance In California Strawberry To Verticillium Dahliae, Zachary Christman

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Since 1930 the University of California, Davis, has been developing strawberry cultivars that are adapted to the agricultural industry and regional farms. Developing cultivars that require fewer inputs are of significant economic importance in agronomy. Developing a crop resistant to a disease is beneficial for horticulturists since less labor and chemicals are needed for a high yield.⁶

In commercial strawberry cultivars, complete resistance to V. dahlia is extremely rare. The majority of Californian strawberry cultivars are highly susceptible to it.² Over the last 18 years of plant breeding for strawberry cultivars with a high degree of resistance and …

Evaluating Consumer Sensory And Composition Attributes Of Arkansas-Grown Fresh-Market Blackberries, Aubrey N. Dunteman, Renee T. Threlfall, John R. Clark, Margaret L. Worthington

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Blackberries are grown worldwide for commercial fresh markets. Three Arkansas-grown fresh-market blackberry genotypes (‘Natchez’, ‘Ouachita’, and A-2418) were evaluated for consumer sensory and compositional attributes at the University of Arkansas Food Science Department, Fayetteville. The compositional attributes of the blackberries were within an acceptable range for commercial markets (soluble solids=8.20-11.90%, pH=2.79-3.18, titratable acidity=1.09-1.32%). In terms of soluble solids to titratable acidity ratio, ‘Ouachita’ (10.92) had the highest ratio, followed by ‘Natchez’ (8.93) and A-2418 (6.25). A consumer sensory panel (n=80) evaluated fresh-market blackberry attributes using a 9-point hedonic scale for overall impression, overall flavor, sweetness, and sourness and a 5-point …

Effect Of Phytosanitary Irradiation On The Quality Of Two Varieties Of Pummelos (Citrus Maxima (Burm.) Merr.), A. Jain, J. Ornelas-Paz, D. Obenland, K. Rodriguez (Friscia), Anuradha Prakash

Food Science Faculty Articles and Research

Phytosanitary treatments prevent the introduction of pests such as fruit flies into pest free zones, and are often required for international trade. Irradiation is increasingly being considered as an alternative to cold and chemical phytosanitary treatments, such as methyl bromide. In this study, the effect of low dose gamma irradiation on the post-harvest quality of two varieties of pummelos (Citrus maxima (Burm.) Merr.), an emerging crop of interest in the US was evaluated. Two varieties of pummelos grown in California were irradiated at the phytosanitary target dose of 150 Gy and a higher dose of 1000 Gy to exaggerate …

Particular Applications Of Food Irradiation Fresh Produce, Anuradha Prakash

Food Science Faculty Articles and Research

On fresh fruits and vegetables, irradiation at low and medium dose levels can effectively reduce microbial counts which can enhance safety, inhibit sprouting to extend shelf-life, and eliminate or sterilize insect pests which can serve to facilitate trade between countries. At the dose levels used for these purposes, the impact on quality is negligible. Despite the fact that regulations in many countries allow the use of irradiation for fresh produce, the technology remains under-utilized, even in the light of an increase in produce related disease outbreaks and the economic benefits of extended shelflife and reduced food waste. Putative concerns about …

Comparative Evaluation Of The Effect Of Methyl Bromide Fumigation And Phytosanitary Irradiation On The Quality Of Fresh Strawberries, Tamar Serapian, Anuradha Prakash

Food Science Faculty Articles and Research

Fresh strawberries are highly perishable and have a short shelf-life especially when the cold chain is not maintained. Strawberries exported to Asia are currently fumigated with methyl bromide for phytosanitary purposes, which exposes strawberries to warm temperatures for several hours and air freight without temperature control, resulting in a shelf life of just a few days in the destination country. Irradiation offers an efficacious alternative to fumigation and can be performed on cold fruit. This study was conducted to compare the quality of strawberries subject to methyl bromide fumigation or irradiation followed by simulated commercial air freight shipment of strawberries …

Letter From The Dean, Lalit Verma

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Pesticide Use On Peaches And Pears Grown In Connecticut: 1991, James L. Turner Ii, Candace L. Bartholomew

Storrs Agricultural Experiment Station

No abstract provided.

Metals In Apple Cider Produced And Marketed In Connecticut, Dennis W. Hill, Thomas R. Kelley, Gale R. Morrow, Sylvia W. Matiuck

Storrs Agricultural Experiment Station

No abstract provided.