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Dehydrated Onion, Dehydrated Garlic, Spices

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By Author: mwebtech
Total Articles: 3
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Solar drying
Moyis described the construction and performance of a natural convection solar dryer for drying the fruits and onion and found that from 342 m2 area, 500 kg of material can be dried in 3–5 days with a peak air temperature of 63°C and an air flow rate of 79 m3/min.

Convective air drying
At a commercial level the convective drying of onion is used mainly now-a-days. Researchers have found that three stage drying of onion flakes had better effect on organoleptic characteristics of onion compared to one constant drying temperature of 50°C. However this convective drying method has some adverse effect on the finished product. Conventionally air dried products tend to be difficult to rehydrate satisfactorily due to structural changes in the product and of indifferent quality due to excessive thermal damage.
They recommended that the onion flakes could be dehydrated in two stage; in the first stage by employing 90°C temperature removing moisture upto 50% and in the second stage employing 50°C temperature removing the remaining moisture.
Microwave and freeze drying
Microwave drying of onion with a hot air pretreatment and compared the products with traditionally dried ones. The colour of microwave and freeze dried onions was similar to that of air dried onions at 80 and 60°C, respectively. However, rehydration was better in case of freeze drying. Higher level of shrinkage was observed in case of microwave dried samples.
Vacuum drying
Onion slices were dried in a single layer of thickness varying from 1 to 5 mm in the temperature range of 50–70°C in a laboratory scale vacuum dryer. The effect of pretreatment, drying temperature and slice thickness on the drying kinetics of onion slices was studied using different thin layer models. The moisture diffusivity values were found ranging from 1.32E−10 to 1.09E−09 m2/s for untreated and 1.32E−10 to 1.09E−01 m2/s for treated onion slices. Effective moisture diffusivity showed increasing trend with increase in temperature and thickness.

Aarui Foods is manufacturing unit specialized in manufacturing of Dehydrated Onion and Garlic Products. We believe in providing best quality and value offerings.
We are also engaged in supply & exports of Dehydrated Onion, Dehydrated Garlic & Dehydrated Vegetable products, Indian Spices and other agro products
We at Aarui Foods we are committed to Supply safe and Hygienic dehydrated products to our customer. Quality control checks are integrated part of entire production process. We have also setup in-house laboratory in our plat.
Quality process begins from procurement of raw material. Our experience management team is directly involved in this process.
For quality, dependability and consistency, Jalaram Group of Industries manages the entire sourcing process from seed development through customer delivery to customer satisfaction.
Aarui Foods
P : + 91 79 2970 7470
E : info@jgindia.com
W : www.jgindia.com

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