Comparison of Drying Characteristics and Quality of Rough Rice Dried With Infrared and Heated Air

2005 ◽  
Author(s):  
K.S.P. Amaratunga ◽  
Zhongli Pan ◽  
Xianzhe Zheng ◽  
James F. Thompson
Keyword(s):  
Drying Characteristics ◽  
Heated Air ◽  
Rough Rice

Drying Characteristics and Quality of Rough Rice under Infrared Radiation Heating

2011 ◽  
Vol 54 (1) ◽  
pp. 203-210 ◽  
Author(s):  
Z. Pan ◽  
R. Khir ◽  
K. L. Bett-Garber ◽  
E. T. Champagne ◽  
J. F. Thompson ◽  
...  
Keyword(s):  
Infrared Radiation ◽  
Radiation Heating ◽  
Drying Characteristics ◽  
Rough Rice

Effect of Rice Chilling on Drying, Milling, and Quality Characteristics

2020 ◽  
Vol 36 (5) ◽  
pp. 767-776
Author(s):  
Soraya Shafiekhani ◽  
Griffiths G Atungulu
Keyword(s):  
High Temperature ◽  
Cold Storage ◽  
Storage Temperature ◽  
Rice Yield ◽  
Quality Characteristics ◽  
List Type ◽  
Milled Rice ◽  
Heated Air ◽  
Rough Rice

HighlightsThis study experimentally simulated drying of rough rice subjected to various cold storage/chilling conditions.The rice was dried using slightly-heated air and high temperature air with procedures set to mimic those practiced by commercial systems.The moisture removal, drying rate constant, material state transition, milling and quality characteristics of rice upon drying conditions was investigated.The study provides important reference information for growers and rice processors using the relatively new rice cooling technology.Abstract. High temperature (field heat) and moisture content of freshly harvested rough rice promote excessive respiration and microbial growth. Therefore, the rice risks significant deterioration of quality due to delayed drying at peak harvest time when drying capacity becomes limited. The U.S. rice industry has identified that cooling/chilling the rice prior to drying to remove the excess heat, immediately after harvest, significantly preserves the quality of milled rice. This study experimentally simulated drying of rough rice after cold storage/chilling. The rice was dried using slightly-heated air and high temperature air with procedures set to mimic those practiced by commercial systems. Rough rice at moisture contents (MCs) of 16%, 19%, and 21% (wet basis) were stored at storage temperature (Ts) of 10°C, 15°C, and 20°C for up to 4 months. Following retrieval, the samples were dried at drying temperature (Td) of 35°C, 45°C, and 60°C and relative humidity (RH) of 20%. Each drying run comprised of two 20-min drying passes with the rice tempered at the drying Td for a duration of 4 h following every drying pass. Following the drying, the rice was conditioned in an equilibrium MC chamber (T=26°C, RH=56%) to 12.5% MC and then milled to evaluate milled rice yield and quality characteristics. The highest percentage points of MC removal (6.77% points) occurred following drying at air temperature of 60°C for samples with initial MC at 21% and stored at 20°C. Drying with air at 60°C decreased head rice yield (HRY) especially for samples with initial MC at 21% and stored at 10°C (HRY=51.4% versus those at 45°C and 35°C, HRY=55.95% and HRY=58.8%, respectively). Drying air temperatures studied (35°C, 45°C, 60°C) had no significant effect of causing discoloration of samples within the range of the studied initial MCs and storage temperatures. Peak and final viscosities of samples with different initial MCs (16%, 19%, and 21%) stored at 20°C followed by high temperature air drying (60°C) were significantly different from those of samples stored at 10°C and 15°C. The results provided insight into the drying, milling, and quality characteristics of rice after cold storage/chilling. The information provide foundation for development of new recommendations to improve quality of milled rice. Keywords: Conventional drying, Cooling/chilling, Milling quality, Rough rice, Storage.

Drying characteristics and quality of rough rice under infrared radiation heating

2007 ◽  
Author(s):  
Ragab Khir ◽  
Zhongli Pan ◽  
Adel Salim ◽  
James F Thompson
Keyword(s):  
Infrared Radiation ◽  
Radiation Heating ◽  
Drying Characteristics ◽  
Rough Rice

Drying Characteristics and Milling Quality of Rough Rice Dried in a Single Pass Incorporating Glass Transition Principles

2012 ◽  
Vol 30 (16) ◽  
pp. 1821-1830 ◽  
Author(s):  
George Owira Ondier ◽  
Terry Siebenmorgen ◽  
Andronikos Mauromoustakos
Keyword(s):  
Glass Transition ◽  
Drying Characteristics ◽  
Milling Quality ◽  
Single Pass ◽  
Rough Rice

Far Infrared Drying Characteristics of Seasoned Red Pepper Sauce Dried by Heated Air

2016 ◽  
Vol 45 (9) ◽  
pp. 1358-1365 ◽  
Author(s):  
Byeong Hyo Cho ◽  
Jung Hyun Lee ◽  
Tae Hwan Kang ◽  
Hee Sook Lee ◽  
Chung Su Han
Keyword(s):  
Far Infrared ◽  
Red Pepper ◽  
Drying Characteristics ◽  
Infrared Drying ◽  
Heated Air ◽  
Pepper Sauce

scholarly journals Drying Characteristics and Physical and Nutritional Properties of Shrimp Meat as Affected by Different Traditional Drying Techniques

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
P. T. Akonor ◽  
H. Ofori ◽  
N. T. Dziedzoave ◽  
N. K. Kortei
Keyword(s):  
Ash Content ◽  
Moisture Loss ◽  
Drying Methods ◽  
Moisture Removal ◽  
Solar Drying ◽  
Nutritional Properties ◽  
Drying Characteristics ◽  
Red Color ◽  
Drying Techniques

The influence of different drying methods on physical and nutritional properties of shrimp meat was investigated in this study. Peeled shrimps were dried separately using an air-oven dryer and a tunnel solar dryer. The drying profile of shrimp meat was determined in the two drying systems by monitoring moisture loss over the drying period. Changes in color, proximate composition, and rehydration capacity were assessed. The rate of moisture removal during solar drying was faster than the air-oven drying. The development of red color during drying was comparable among the two methods, but solar-dried shrimps appeared darker (L⁎=47.4) than the air-oven-dried (L⁎=49.0). Chemical analysis indicated that protein and fat made up nearly 20% and 2% (wb) of the shrimp meat, respectively. Protein and ash content of shrimp meat dried under the two dryer types were comparable but fat was significantly (p<0.05) higher in oven-dried meat (2.1%), compared to solar-dried meat (1.5%). Although rehydration behavior of shrimp from the two drying systems followed a similar pattern, solar-dried shrimp absorbed moisture more rapidly. The results have demonstrated that different approaches to drying may affect the physical and nutritional quality of shrimp meat differently.

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