Food Processing, Dried Food, Frozen Food, Juice & Beverages

Optimization of Guava Juice and Powder Production

  Enzyme treatment of guava puree was optimized for yield and clarity by first determining the most effective concentration, then varying both incubation time and temperature. Application of Pectinex Ultra SP-L® was optimal using 700 ppm enzyme for 1.5 hr at 50°C. Clarified guava juice...
Chetan A. Chopda
Diane M. Barrett
UC Davis Department of Food Science and Technology

Moisture Removal Characteristics of Thin Layer Rough Rice Under Sequenced Infrared Radiation Heating and Cooling

  The objective of this study was to investigate the moisture removal characteristics of thin layer rough rice heated by infrared (IR) and cooled with various cooling methods. Thin layer rough rice samples with different initial moisture contents (MCs) were heated using a catalytic IR emitter...
Ragab Khir
Zhongli Pan
James F. Thompson
Adel S. El-Sayed
Bruce R. Hartsough
Mohamed S. El-Amir
Journal of Food Processing and Preservation

Feasibility of Simultaneous Rough Rice Drying and Disinfestations by Infrared Radiation Heating and Rice Milling Quality

  The objective of this study was to investigate the drying characteristics, milling quality, and effectiveness of disinfestation of rough rice under conditions of infrared (IR) radiation heating. Freshly harvested medium grain rice (M202) samples with low (20.6%) and high (25.0%) moisture...
Zhongli Pan
Ragab Khir
Larry D. Godfrey
Richard Lewis
James F. Thompson
Adel Salim
Journal of Food Engineering

Residual Pectinesterase Activity in Dehydrated Onion and Garlic Products

  During the dehydration of onion and garlic products, use of high temperatures is undersirable due to the potential loss of aroma and flavor characteristics. As a consequence, residual pectinesterase (PE) activity may be found in these dehydrated spices. This study reports the presence of PE...
Elisabeth Garcia
Marisa Alviar-Agnew
Diane M. Barrett
UC Davis Department of Food Science and Technology

Cinética de secado de tiras de cladodios de Nopal (Opuntia ficus indica) en un secador convectivo de flujo transversal

  Opuntia ficus-indica, también conocido como nopal, es un cactus que crece en zonas áridas y semiáridas de América. La deshidratación del nopal es una alternativa para su conservación como alimento pero el tiempo para secar los cladodios es muy largo...
Felipe Díaz-Ayala
G. del Socorro Álvarez-García
Efraín Simá-Moo

Cracking and Fruit Quality of Pomegranate (Punica granatum L.) As Affected by Pre-Harvest Sprays of Some Growth Regulators and Mineral Nutrients

An experiment was carried out during 2011 and 2012 seasons to study the effect of foliar application by using some growth regulators (paclobutrazol at 300 ppm, gibberellic acid (GA3) at 80 ppmand NAA at 40 ppm) and mineral nutrients (3% Ca as calcium chloride (CaCl2), 0.3 % boron as boric acid and...
Hoda A. Khalil
Hoda S.H. Aly
Journal of Horticultural Science & Ornamental Plants

Effect of Pressing Techniques on Olive Oil Quality

Different techniques of oil extraction are applied in Jordan, including traditional press, two- and three-phase systems. Results of the study indicated that there is a significant difference in olive oil quality obtained from different pressing systems in terms of free acidity, ultraviolet...
Adnan I. Khdair
Salam Ayoub
Ghaida Abu-Rumman
American Journal of Food Technology

Canning Quality of New Drought-Tolerant Dry Bean (Phaseolus vulgaris L.) Lines

Abstract: Canning quality of twenty nine new drought-tolerant bean lines from two grain types; large-seeded and small-seeded, was investigated. Bean seeds were soaked, blanched, canned in brine and stored for three weeks prior to evaluation. Mex-142, the popular canning variety, was used as a...
A.O. Warsame
P.M. Kimani
American Journal of Food Technology

How do I manage storage pests in grains?

  A considerable portion of grains is lost after harvest because of poor handling and poor storage practices that expose the stored grains to insect pests and diseases. Insect pests like the Larger Grain Borer, grain weevils, flour beetles and vertebrate pests like rodents can destroy entire...
FiBL, Research Institute of Organic Agriculture, Switzerland
FiBL, Research Institute of Organic Agriculture

Changes in some biochemical qualities during drying of pulp pre-conditioned and fermented cocoa (Theobroma cacao) beans

  Fermentation and drying are critical to the development of flavour precursors that generate into distinctive chocolate flavour notes during industrial manufacture. These processes also lead to reduction in acidity and free fatty acids of nibs, which dictates the levels of bitterness and...
E.O. Afoakwa
J.E. Kongor
A.S. Budu
H. Mensah-Brown
J.F. Takrama
African Journal of Food, Agriculture, Nutrition and Development