Study on drying bamboo shoots by Sasaki heat pump drying technology

2021 ◽  
Vol 63 (6) ◽  
pp. 57-62
Author(s):  
Thi Bac Doan ◽  
◽  
Thu Hang Ta ◽  
Dac Binh Minh Nguyen ◽  
Thi Hoang Lan Nguyen ◽  
...  
Keyword(s):  
Heat Pump ◽  
Salt Concentration ◽  
Color Variation ◽  
Food Hygiene ◽  
Bamboo Shoots ◽  
Heat Pump Drying ◽  
Drying Technology ◽  
Water Compensation ◽  
Cyanide Content

The study was conducted to investigate the effects of blanching regimes at the salt concentration and drying temperature using Sasaki heat pump drying technology on the quality of dried bamboo shoots to create a product that can be kept color, flavour, and quality. Fresh bamboo shoots were cut into slices with a thickness of 6 mm, boiled in hot saltwater at 100oC at different concentrations (0, 1, 3, 5%) for 15 minutes. Then, they were dried in the temperature setting differences (30, 40, 50oC) by Sasaki dryers and tested for moisture, color, cyanide content, microorganisms, water compensation capacity, and product sensory quality. Fresh bamboo shoots were boiled in hot saltwater at 100oC, 3% salt concentration for 15 minutes, and dried at 40oC by Sasaki drier for the best quality. This treatment mode provides the lowest color variation and the best water compensation compared to other treatment modes. Dried bamboo shoots are bright yellow, uniform color, characteristic odour, toughness with little deformation, low cyanide content, and microbiological content below the threshold of food hygiene and safety.

scholarly journals ENERGY SAVING TECHNOLOGIES FOR DRYING OF HEAT-SENSITIVE MATERIALS

2019 ◽  
Vol 41 (4) ◽  
pp. 5-12
Author(s):  
Yu.F. Sniezhkin ◽  
Xiong Jian ◽  
D.M. Chalaev ◽  
М.М. Ulanov ◽  
N.О. Dabizha
Keyword(s):  
Heat Pump ◽  
Thermal Conditions ◽  
High Energy ◽  
Heat Pumps ◽  
Convective Drying ◽  
Drying Time ◽  
Long Duration ◽  
Heat Pump Drying ◽  
Promising Development

The promising development of convective drying of thermolabile materials is the use of heat pumps. The main advantages of heat pump drying are high energy efficiency, controlled thermal conditions of drying, high quality of the final product, environmental cleanliness of the technological process.The processes of air treatment in convective heat pumps with different schemes of dehydration of the drying agent are considered in the paper. As determined, the main disadvantage of heat pump drying is the long duration of the process due to the drying temperature limitation not exceeding 50-60 °C, and the dried material is not initially heated above the temperature of the wet thermometer, which is 25-30 °C. The possibility of using infrared radiation in combination with a heat pump was studied to intensify the process of low-temperature convective drying. It is shown that the combination of heat pump and infrared drying processes provides a synergistic effect, which leads to a shorter drying time and reduced energy consumption, as well as to obtain better quality dried products.

Effects of infrared radiation drying and heat pump drying combined with tempering on the quality of long-grain paddy rice

2018 ◽  
Vol 53 (11) ◽  
pp. 2448-2456 ◽  
Author(s):  
Xuxia Zhou ◽  
Lin Liu ◽  
Pengcheng Fu ◽  
Fei Lyu ◽  
Jianyou Zhang ◽  
...  
Keyword(s):  
Heat Pump ◽  
Infrared Radiation ◽  
Paddy Rice ◽  
Heat Pump Drying

scholarly journals Heat Pump Drying of Fruits and Vegetables: Principles and Potentials for Sub-Saharan Africa

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Folasayo Fayose ◽  
Zhongjie Huan
Keyword(s):  
South Africa ◽  
Heat Pump ◽  
Fruits And Vegetables ◽  
Developed Countries ◽  
Sub Saharan Africa ◽  
African Region ◽  
Industrial Sectors ◽  
Heat Pump Drying ◽  
Sub Saharan ◽  
Drying Technology

Heat pump technology has been used for heating, ventilation, and air-conditioning in domestic and industrial sectors in most developed countries of the world including South Africa. However, heat pump drying (HPD) of fruits and vegetables has been largely unexploited in South Africa and by extension to the sub-Saharan African region. Although studies on heat pump drying started in South Africa several years ago, not much progress has been recorded to date. Many potential users view heat pump drying technology as fragile, slow, and high capital intensive when compared with conventional dryer. This paper tried to divulge the principles and potentials of heat pump drying technology and the conditions for its optimum use. Also, various methods of quantifying performances during heat pump drying as well as the quality of the dried products are highlighted. Necessary factors for maximizing the capacity and efficiency of a heat pump dryer were identified. Finally, the erroneous view that heat pump drying is not feasible economically in sub-Saharan Africa was clarified.

scholarly journals Drying characteristics and quality of lemon slices dried undergone Coulomb force assisted heat pump drying

2018 ◽  
Author(s):  
S. K. Chin ◽  
Y. H. Lee ◽  
B. K. Chung
Keyword(s):  
Vitamin C ◽  
Heat Pump ◽  
Coulomb Force ◽  
Total Phenolic ◽  
Drying Rate ◽  
Total Energy Consumption ◽  
Drying Time ◽  
Drying Characteristics ◽  
Heat Pump Drying

In this research, a Coulomb force assisted heat pump (CF-HP) dryer was invented for the purpose of improving the drying characteristics and product quality of biomaterials. As compared to heat pump drying alone, the assistance of Coulomb force in heat pump dryer enhanced the drying rates and effective moisture diffusivity of lemon slices up to 26%, which eventually shortened the total drying time to 40%. This saved the total energy consumption of HP drying by 31.5%. High retention of vitamin C and TPC were also found in CF-HP dried slices due to mild drying temperature and fast drying rate. Keywords: Coulomb force; Heat pump drying; Drying rate; Vitamin C; Total Phenolic Content (TPC).  

Thermal behavior, microstructure and protein quality of squid fillets dried by far-infrared assisted heat pump drying

Food Control ◽  
2014 ◽  
Vol 36 (1) ◽  
pp. 102-110 ◽  
Author(s):  
Yun Deng ◽  
Yuegang Wang ◽  
Jin Yue ◽  
Zhenmin Liu ◽  
Yuanrong Zheng ◽  
...  
Keyword(s):  
Thermal Behavior ◽  
Heat Pump ◽  
Protein Quality ◽  
Far Infrared ◽  
Heat Pump Drying

scholarly journals Determining the Effect of Pre-Treatment in Rice Noodle Quality Subjected to Dehydration through Hierarchical Scoring

Processes ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1309
Author(s):  
Muhammad Heikal Ismail ◽  
Hii Ching Lik ◽  
Winny Routray ◽  
Meng Wai Woo
Keyword(s):  
Heat Pump ◽  
Freeze Drying ◽  
Oil Content ◽  
Hot Air Drying ◽  
Air Drying ◽  
Starch Gelatinization ◽  
Hot Air ◽  
Heat Pump Drying ◽  
Pre Treatment ◽  
Noodle Quality

Fresh rice noodle was usually coated in a large amount of oil to avoid stickiness and extend the shelf life. Pre-treatment has been applied to reduce the quantity of oil in rice noodle. In this research, the pre-treatment and temperature effect on the rice noodle quality subjected to hot air drying, heat pump drying, and freeze drying was investigated. Texture, color, oil content, and starch gelatinization of the dried noodle was further evaluated. Results revealed that there were significant differences (p < 0.05%) in texture, color, oil content, and starch gelatinization in rice noodle subjected to pre-treatment. Furthermore, the texture, color, oil content, and starch gelatinization demonstrated a significant difference (p < 0.05%) in freeze drying rather than hot air drying and heat pump drying. The findings indicate that the qualitative features of the dehydrated noodle are synergistic to pretreatment and drying temperature. Despite superior quality shown by freeze drying, the hierarchical scoring has proven that rice noodle undergoing hot air drying at 30 °C to produce comparable quality attributes. The hierarchical scoring can be a useful tool in quality determination for the food industry.

Experimental Performance of a Thermoelectric Heat-Pump Drying System for Drying Herbs

2015 ◽  
Vol 44 (6) ◽  
pp. 2142-2145 ◽  
Author(s):  
K. Wongsim ◽  
J. Jamradloedluk ◽  
C. Lertsatitthanakorn ◽  
S. Siriamornpun ◽  
M. Rungsiyopas ◽  
...  
Keyword(s):  
Heat Pump ◽  
Experimental Performance ◽  
Drying System ◽  
Heat Pump Drying ◽  
Thermoelectric Heat Pump ◽  
Thermoelectric Heat
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