Parboiling of dehusked rice

Kar, Niharendu Bikash; Jain, R.K.; Srivastav, P.P.

doi:10.1016/s0260-8774(98)00138-1

Cited by 67 publications

(60 citation statements)

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“…Parboiling of dehusked paddy by soaking at 70°C for 1.5 h and steaming for 12 min (Abrol, 1983), soaking at 75°C followed by natural cooling (Pillaiyar and Mohandass,1981) soaking at 70-100°C and cooling at room temperature for 2 h followed by open steaming for 20 min (Kar et al, 1999) have been documented. The last method reduced cooking time by 30% and saved 40 % energy.…”

Section: Effect Of Parboilingmentioning

confidence: 99%

Influence of Milling Parameters on Head Rice Recovery: A Review

Rehal¹,

Kaur²,

Singh³

2017

Int.J.Curr.Microbiol.App.Sci

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Section: Effect Of Parboilingmentioning

confidence: 99%

Influence of Milling Parameters on Head Rice Recovery: A Review

Rehal¹,

Kaur²,

Singh³

2017

Int.J.Curr.Microbiol.App.Sci

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“…However, it was reported that if the rice is dehusked before parboiling then the energy consumption of parboiling operation could be cut down by 40 % (Ka et al 1999). The drying process is mainly done under direct sunlight radiation on a floor.…”

Section: Energy Conversion and Source For Various Energiesmentioning

confidence: 99%

Energy use pattern in rice milling industries—a critical appraisal

2012

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Rice milling industry is one of the most energy consuming industries. Like capital, labour and material, energy is one of the production factors which used to produce final product. In economical term, energy is demandderived goods and can be regarded as intermediate good whose demand depends on the demand of final product. This paper deals with various types of energy pattern used in rice milling industries viz., thermal energy, mechanical energy, electrical energy and human energy. The important utilities in a rice mill are water, air, steam, electricity and labour. In a rice mill some of the operations are done manually namely, cleaning, sun drying, feeding paddy to the bucket elevators, weighing and packaging, etc. So the man-hours are also included in energy accounting. Water is used for soaking and steam generation. Electricity is the main energy source for these rice mills and is imported form the state electricity board grids. Electricity is used to run motors, pumps, blowers, conveyors, fans, lights, etc. The variations in the consumption rate of energy through the use of utilities during processing must also accounted for final cost of the finished product. The paddy milling consumes significant quantity of fuels and electricity. The major energy consuming equipments in the rice milling units are; boilers and steam distribution, blowers, pumps, conveyers, elevators, motors, transmission systems, weighing, etc. Though, wide variety of technologies has been evolved for efficient use of energy for various equipments of rice mills, so far, only a few have improved their energy efficiency levels. Most of the rice mills use old and locally available technologies and are also completely dependent on locally available technical personnel.

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“…The process of parboiling of dehusked rice could save about 40% energy and could be easily adopted by primary processors in developing countries. The rice have been organoleptically evaluated and found acceptable [22]. However, this type of process is susceptible to contamination if the processing equipment is not as per food grade quality and it needs shade drying instead of open floor drying under sunshine as in traditional practices.…”

Section: Energy Consumption In Different Operations Of Rice Processingmentioning

confidence: 99%

“…However, it was reported that if the rice is dehusked before parboiling then the energy consumption of parboiling operation could be cut down by 40% [22]. The drying process is mainly done under direct sunlight radiation on a floor.…”

Section: Introductionmentioning

confidence: 99%

Energy Utilization and Environmental Aspects of Rice Processing Industries in Bangladesh

Ahiduzzaman

Islam

2009

Energies

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Abstract:In this study, the energy utilization and environmental aspects of the rice processing industries in Bangladesh was analyzed. Rice husk, a milling by-product of rice, is used as a source of thermal energy to produce steam for parboiling of raw rice. The rice is mostly dried on a concrete floor under the sunshine. In mechanical drying, rice husks are used as a source of primary energy. In Bangladesh, the annual estimated energy used in 2000 for the drying of rice by sunshine was 10.7 million GJ and for drying and parboiling by rice husks it was 48.2 million GJ. These amounts will increase to 20.5 and 92.5 million GJ in 2030, respectively. Electrical energy consumption for mechanical drying and milling of rice was calculated as 1.83 million GJ e and 3.51 million GJ e in 2000 and in 2030, respectively. Biogenic carbon dioxide emission from burning of rice husk is renewed every year by the rice plant. Both the biogenic and non-biogenic carbon dioxide emissions in 2000 were calculated as 5.7 and 0.4 million tonnes, respectively, which will increase to 10.9 and 0.7 million tonnes in 2030. The demand of energy for rice processing increases every year, therefore, energy conservation in rice processing industries would be a viable option to reduce the intensity of energy by increasing the efficiency of rice processing systems which leads to a reduction in emissions and an increased supply of rice husk energy to other sectors as well.

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Parboiling of dehusked rice

Cited by 67 publications

References 0 publications

Influence of Milling Parameters on Head Rice Recovery: A Review

Influence of Milling Parameters on Head Rice Recovery: A Review

Energy use pattern in rice milling industries—a critical appraisal

Energy Utilization and Environmental Aspects of Rice Processing Industries in Bangladesh

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