Feasibility of simultaneous rough rice drying and disinfestations by infrared radiation heating and rice milling quality

Pan, Zhongli; Khir, Ragab; Godfrey, Larry D.; Lewis, Richard J.; Thompson, James F.; Salim, Adel

doi:10.1016/j.jfoodeng.2007.06.005

Cited by 112 publications

(102 citation statements)

References 16 publications

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“…This is an added-advantage to pest control management as lower moisture content discouraged insect infestation in the grain. It was also reported by Pan et al (2008) that rice grain are recommended to be kept in lower moisture content (12 -13 %) than it is normally stored (at 13.5 -14 %) to avoid pest infestation in rice especially Sitophilus oryzae (L.) which are prevalent in rice storage. Thus, it is recommended that the moisture content of ozone-treated rice to be monitored closely as not to cause any detrimental effect on the rice quality.…”

Section: Preliminary Studiesmentioning

confidence: 99%

Changes in physicochemical characteristics of ozone-treated raw white rice

2013

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Ozone dose from 0.1 to 0.4 ppm has been proven to be effective in lowering Bacillus cereus count in uncooked and cooked rice. However, it induces physicochemical changes in raw white rice. Physicochemical tests were done to see the effect of ozone treatment towards moisture content, pH, color, hardness of uncooked rice, adhesiveness and hardness of cooked rice, cooking quality and total solids. Results have shown that moisture content, adhesiveness and hardness of cooked rice and uncooked rice have not undergone any significant changes (P>0.05) in comparison with controlled rice sample. Meanwhile, color (L* and b* value), pH, total solids and cooking quality results have shown significant changes (P<0.05). These analyses proved that limitations should be applied to ozone concentration and exposure time to minimize any detrimental effects on the physicochemical characteristics of rice.

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Section: Preliminary Studiesmentioning

confidence: 99%

Changes in physicochemical characteristics of ozone-treated raw white rice

2013

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“…The infrared radiation machine would be 200×300×250 cm in size and it will operate at 60°C for 60 sec (1 min) as demonstrated by (Pan et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…But these methods could not totally get rid of insects. The used of infrared radiation heating in disinfestations was first reported by (Pan et al, 2007;Ramatchima, 2009). By applying heat to rice for a short period of time, insects are gradually dead.…”

Section: Introductionmentioning

confidence: 99%

Cost Comparisons in the Rice Disinfestations between Infrared Radiations Heating Application and Chemical Application

Insorn¹,

Lee²,

Piantong³

et al. 2010

Energy Research J.

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Problem statement: Rice is one of importance export goods especially Hom Mali Rice. Therefore, rice storage is very important. The main enemy of Hom Mali Rice is Rice Weevil. It is a small insect and grows fast with small amount of food eating. Its deteriorate rice by bite both internal and external rice kernel resulting in damage and loss of rice. However, its necessary to the study of cost in the rice disinfestations between the Infrared radiation heating application and chemical application in order to obtain information in decision making. Approach: The purpose of this research is to evaluate cost structure in the disinfestations of rice insect between chemical method and infrared radiation heating application. Methodology: (1) Data and information collected by surveying and rice milling enterprises from private in Surin province. The information studied were type of insects, rice storage method, organization and business method, cost structure and exportation system. (2) Cost analysis and rate of return. Results: The calculation of cost based on the large rice mill export factory in Surin province of Thailand. The cost structure of rice milling can be divided into 2 types: Fixed cost and variable cost which are equal to 5,385,256 baht (2% of total cost) and 274,922,345 baht (98 % of total cost), respectively. The rate of return in rice milling is 19,020 ton year , respectively. Therefore, the nonchemical method increase total cost only by 1% or 112,218 baht. Conclusion: Major enemy of Hom Mali Rice during stock is rice weevil. The rice deteriorations caused by rice weevil such as dirty rice, powder dust, weight loss and bad taste. The economic expenses and involving cost in applying radiation heating and chemical were calculated and compared. The cost structure of rice milling business consist of 2 groups include fixed cost equal to 5,385,256 baht (2% of total cost) and variable cost equal to 274,922,345 baht (98% of total cost). The rate of return in rice milling was 19,020 ton year −1 . The total cost of using infrared radiation heating application and chemical application equal to 0.3096 and 0.3037 bath kg −1 , respectively. Therefore, the infrared method increase total cost by 1% or cost increase of 112,218 baht year −1 .

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“…Hot air drying has many disadvantages such as lower energy efficiency and long drying times, but despite that it has been used widely [7,8]. Because of the low thermal conductivity of foods, heat transfer to the inner sections during conventional heating is limited.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Effect of a Hybrid Drying Method on the Color Quality of Nectarine Slices and Energy Consumption

Demirel¹,

Ismail²

2017

Studia UBB Chemia

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ABSTRACT. The main objective of a product quality study for drying agricultural products without causing distortion is to reduce the product moisture value to a final moisture value while expending the least energy and time. In the first stage of this study, nectarine slices were dried in a microwave and cabinet dryer under different drying conditions. Experiments in the microwave dryer were done at four different power levels: 90, 180, 360, and 600 W. Hot air drying was done at two temperatures, 50 and 70 °C, with a constant air velocity (2.0 m/s). In the second stage, after those experiments, the hybrid drying method were constructed based on the color parameter, and moisture ratio. In the hybrid drying method, hot air drying was carried out with microwave pretreatment. The most effective hybrid drying method in terms of optimal drying time, energy consumption, and color parameters was found to be at 180 W microwave power and 70 °C.

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Feasibility of simultaneous rough rice drying and disinfestations by infrared radiation heating and rice milling quality

Cited by 112 publications

References 16 publications

Changes in physicochemical characteristics of ozone-treated raw white rice

Changes in physicochemical characteristics of ozone-treated raw white rice

Cost Comparisons in the Rice Disinfestations between Infrared Radiations Heating Application and Chemical Application

Investigation of the Effect of a Hybrid Drying Method on the Color Quality of Nectarine Slices and Energy Consumption

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