International Journal of Advanced Biological and Biomedical Research

The Effect of Drying Kinetic on Shrinkage of Potato Slices

Negar Hafezi; Mohammad Javad Sheikhdavoodi; Seyed Majid Sajadiye

Volume 2, Issue 11 , November 2014, , Pages 2779-2782

Abstract

Objective: Potato is the fourth important food crop after wheat, rice and maize. Shrinkage of food materials has a negative consequence on ... Read More

Evaluation of Energy Consumption of Potato Slices Drying Using Vacuum-Infrared Method

Negar Hafezi; Mohammad Javad Sheikhdavoodi; Seyed Majid Sajadiye; Mohammad Esmail Khorasani Ferdavani

Volume 2, Issue 10 , October 2014, , Pages 2651-2658

Abstract

Objective: The main objective pursued in this paper is to investigate the energy consumption for drying of potato slices using vacuum-infrared drying method. Methods: Drying of potato ... Read More

Effect of Ultrasonic, Microwave, Chemical, and Osmotic Pre-Treatments on Quality Indexes (Texture, Color, and Rehydration Ratio) of Dried Button Mushroom Slices in Hot Air Drying

Mahboobeh Hosseini; Yaghoob Mansoori; Ahmad Mostaan; Ahmad Rajaee

Volume 2, Issue 7 , July 2014, , Pages 2294-2300

Abstract

Objective: Button mushrooms (Agaricus Bisporus) are among the most widely produced and consumed mushrooms in the world. Generally speaking, mushrooms are of great nutritional value, ... Read More Objective: Button mushrooms (Agaricus Bisporus) are among the most widely produced and consumed mushrooms in the world. Generally speaking, mushrooms are of great nutritional value, which due to their high content of moisture and their corruptibility particular attention is required to be paid to their conservation and health. Drying is one of the most important ways to preserve the yields with high content of humidity. Methods: In this study, in order to increase the hold time and quality specifications, different pretreatments including osmotic (NaCl2 with a 10% density ratio), chemical (metabisulfite potassium with concentration 0/5% density ratio), ultrasound (with a frequency of 28 ±0/5 (KHZ)), and microwave (with power 360 watt) were applied. These pretreatments were dried through the hot air method. Osmotic, chemical, and ultrasound pretreatments were used for 2 h, 30 minutes, and 30 minutes, respectively at ambient temperature, while the microwave was employed for 4 minutes. Then effect of various pretreatments on the dried button mushrooms’ quality indexes such as texture, color, and rehydration ratio was investigated. Results: Based on the results, with regard to the tissue of samples under various pretreatments, a highly significant difference at 1% level can be observed for the hardness and adhesiveness indexes, while a significant difference exists for the chewiness index at 5%. After comparison, the maximum hardness was seen in the control sample, and hardness value of the samples under various pretreatments was lower than that of the control. Among the samples with ultrasonic, microwave and osmotic pretreatments, no significant difference was observed and the lowest hardness value belonged to the samples with chemical pretreatment. The samples under chemical pretreatment comprised the lowest chewiness value. Furthermore, no significant difference was observed in the other pretreatment and control samples. The least adhesiveness value belonged to the samples with microwave, osmotic, and ultrasound pretreatments. The sample with chemical pretreatment had the highest adhesiveness. The best color was related to the osmotic samples, and control samples showed a low quality. In general, the samples with pretreatments had better color than the control ones. The lowest rehydration ratio was obtained in the samples under chemical and control pretreatment, respectively. Therefore, application of various pretreatments significantly contributes to the improvement of quality specifications, where chemical pretreatment is of great importance.

Analysis of Energy Consumption Rate in Drying Process of Corn Using Dryer Reservoir in Different Temperature and Height of Layer

Zahra Noorghadami; Mohammad Javad Shiekhdavoodi; Seyyed Majid Sajjadiyeh; Mohammad Esmail Khorasani Ferdavani

Volume 2, Issue 7 , July 2014, , Pages 2314-2318

Abstract

Objective: Drying is one of the most important post-harvesting processes in agriculture. Drying method and also drying time have an important effect on the amount of energy required. ... Read More

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Keywords = Drying

The Effect of Drying Kinetic on Shrinkage of Potato Slices

Abstract

Evaluation of Energy Consumption of Potato Slices Drying Using Vacuum-Infrared Method

Abstract

Effect of Ultrasonic, Microwave, Chemical, and Osmotic Pre-Treatments on Quality Indexes (Texture, Color, and Rehydration Ratio) of Dried Button Mushroom Slices in Hot Air Drying

Abstract

Analysis of Energy Consumption Rate in Drying Process of Corn Using Dryer Reservoir in Different Temperature and Height of Layer

Abstract