hot air for drying effect effect

Effects of Freeze Vacuum Drying Combined with Hot Air ...

In this study, freeze vacuum drying (FVD), hot air drying (AD), and FVD combined with AD (FVD-AD) were used to dry kiwifruits. Dried products were analyzed comprehensively on their sensory quality, active components, moisture mobility, odors, and microstructure. Results showed that the FVD-AD saved time by 38.22% compared with FVD while maintaining an acceptable product quality.

Effect of hot air drying on the polyphenol profile of ...

Mar 09, 2020 Hot air drying (HAD) at 50°C, 60°C, 70°C, and 80°C was performed in this study to dehydrate HP and it was found that the drying rate increased in line with the increase of HAD temperature. Absorbance analysis showed that HAD induced significant decreases in the total polyphenol content (TPC), total flavonoid content (TFC), and antioxidant ...

Effect of hot air drying on the polyphenol profile of ...

Hongjv peel (HP), a spice rich in polyphenols, is generally dried for its preservation. Multivariate analysis showed the effects of hot air drying at 50°C, 60°C, 70°C and 80°C on the polyphenol profi...

Effects of hot air temperature on drying properties of ...

The effects of hot air temperature on the drying properties of biomass brick during heat treatment were examined. Biomass brick was dried for 156 h at 30 °C to 80 °C and 50% relative humidity. The results showed that the moisture content and density of the brick during heat treatment were affected greatly by the hot air temperature.

(PDF) Effect of Hot Air Drying and Different Pretreatments ...

In this study, the effect of different pretreatments and three drying temperature (55, 65 and 75 degrees C) on the hot air drying characteristics and color of persimmon were investigated.

Combined radio frequency-vacuum and hot air drying of ...

Hot air drying. Hot air drying of kiwifruit slices was carried out in a cross-flow tray drier (DHG-9030A, Precision Scientific Instrument Co. Ltd., Shanghai, China) with an air flow rate of 2.0 m/s as measured by a rotary vane anemometer (LCA6000, AIRFLOW Instrumentation, Buckingham-215 Shire, UK) and RH ranging from 10 to 20% over the entire ...

Effects of combined infrared and hot‐air drying on ...

Nov 17, 2019 However, the drying characteristics of ginseng have not been studied abundantly. The traditional drying methods are solar drying and hot‐air (HA) drying. Solar drying, as a natural method, depends on sunlight and wind. The weather condition has a great influence on the drying effect.

Fruits and Vegetables Hot Air Drying Processes Research

Hot air drying is the conventional drying method, and it transfers heat from the drying medium to the material based on the heat conduction effect, then this results in two diffusions after the material absorbs heat: the external diffusion ( the moisture from the material surface to the drying medium ) and the internal diffusion ( the moisture ...

Heat Considerations in Hot Air Drying CTG Clean

Jun 25, 2013 The use of cold rinses prior to a hot air drying process will result in much more energy being used to supply heat to the part than would be required to supply heat by heating the final rinse. The same amount of heat is required in the end, and that heat can

Effect of high-humidity hot air impingement blanching ...

Effects of high-humidity hot air impingement blanching (HHAIB) under different times (30, 60, 90, 120, 150, 180, 210, and 240 s) on drying characteristics and quality attributes of red peppers in terms of surface colour, red pigment content, microstructure and texture were investigated.

Effect of hot air drying on the polyphenol profile of ...

Mar 09, 2020 Hot air drying (HAD) at 50°C, 60°C, 70°C, and 80°C was performed in this study to dehydrate HP and it was found that the drying rate increased in line with the increase of HAD temperature. Absorbance analysis showed that HAD induced significant decreases in the total polyphenol content (TPC), total flavonoid content (TFC), and antioxidant ...

Effect of hot air drying on the polyphenol profile of ...

Hongjv peel (HP), a spice rich in polyphenols, is generally dried for its preservation. Multivariate analysis showed the effects of hot air drying at 50°C, 60°C, 70°C and 80°C on the polyphenol profi...

Effects of hot air temperature on drying properties of ...

The effects of hot air temperature on the drying properties of biomass brick during heat treatment were examined. Biomass brick was dried for 156 h at 30 °C to 80 °C and 50% relative humidity. The results showed that the moisture content and density of the brick during heat treatment were affected greatly by the hot air temperature.

Effect of Hot Air Drying on Ultrastructure of Crambe Seeds ...

(2013). Effect of Hot Air Drying on Ultrastructure of Crambe Seeds. Drying Technology: Vol. 31, No. 3, pp. 269-276.

(PDF) EFFECT OF UTILIZATION PARTIAL DRYING BY HOT AIR ON ...

Eleven treatments of jameed were made from sheep butter milk and from goat and cow skim milk. After shaping the jameed paste into balls, control balls (made from sheep butter milk and from goat and cow skim milk) were sun dried for 15 days whereas

Experimental study on the effect of sludge thickness on ...

The effects of ultrasound on the drying time and the drying rate of sludge with various thicknesses were studied. Meanwhile, the effective moisture diffusivity ( D eff ) was analyzed. The experimental results demonstrated that within a certain range, the larger the sludge thickness, the longer the time length of the first falling rate stage ...

Effects of hot-air and hybrid hot air-microwave drying on ...

Oct 19, 2017 Drying and physicochemical characteristics of nectarine slices were investigated using hot-air and hybrid hot air-microwave drying methods under fixed air temperature and air speed (50 °C and 0.5 m/s, respectively). Microwave power levels for the combined hot air-microwave method were 80, 160, 240, and 320 W. Drying kinetics were analyzed and compared using six mathematical models.

Effect of Drying Temperatures on the Peanut Quality during ...

Effect of Drying Temperatures on the Peanut Quality during Hot Air Drying J. Oleo Sci. 69, (5) 403-412 (2020) 405 absorption. After 3 days drying, the moisture content of ’ peanuts was 9.50. Then the peanuts were dehulled by ％ the dehusking machine. The obtained dried peanuts were dehulled and used for quality determination（control group）.

Effects of combined infrared and hot‐air drying on ...

Drying is one of the common and traditional methods to prolong the shelf life of ginseng. Compared to hot‐air (HA) drying, infrared radiation (IR) drying has a few advantages, including greater energy efficiency, faster drying rate, and lower energy consumption. However, the undesirable drying temperature could lead to the charring of samples.

The six problems caused by dry air. Comfort Matters

Jan 20, 2016 Ideal indoor humidity during winter should hover around 45 percent. But dry winter air can cause your humidity to drop substantially, to levels of 15 percent or less. With this humidity imbalance come a number of potential problems that can affect your health, your home and especially your comfort. Problem 1: Dry air and disease prevention

Effect of air-drying temperature on physico-chemical ...

Effect of air-drying temperature on physico-chemical, powder properties and sorption characteristics of pumpkin powders Abstract This study examined the use of hot-air drying in the preparation of pumpkin powder. The drying temperature was varied (50, 60 and 70°C) to determine the effect

Heat Considerations in Hot Air Drying CTG Clean

Jun 25, 2013 The use of cold rinses prior to a hot air drying process will result in much more energy being used to supply heat to the part than would be required to supply heat by heating the final rinse. The same amount of heat is required in the end, and that heat can

Heat Dry vs. Air Dry on Dishwasher Hunker

Apr 13, 2018 The downside is that the time involved to dry your dishes on an air-dry cycle is likely greater than a heated drying, depending on your climate. Humid environments will extend air-drying time, meaning you may still have to hand-dry dishes in hot summer months after you pull the clean dishes from the rack.

Effects of Microwave-Infrared Combination Drying on ...

Effects of microwave-assisted hot air drying and conventional hot air drying on the drying kinetics, color, rehydration, and volatiles of Moringa oleifera. Drying Technology, 29, 1452–1458. CrossRef Google Scholar. Doymaz, İ. (2011). Drying of eggplant slices in thin layers at different air temperatures.

The Drying of Foods and Its Effect on the Physical ...

open air exposure [4]. Figure 1. Solar Drying of pears. B. Hot Air Convective Drying The convective drying of porous media, including foods, has a pivotal role in several industrial applications. Owing to its high availability and moisture saturation capacity, the air is undoubtedly the most used drying fluid [10].

Effect of microwave assisted hot air drying on quality of ...

Due to the decreased drying time, the microwave assisted hot air drying produced dried pumpkin with lighter color and more yellowness than the hot air drying (p LT= 0.05). In fact, the microwave assisted hot air drying under vacuum condition caused the least change of color during drying (p LT= 0.05).

Effect of Drying Temperatures on the Peanut Quality during ...

Effect of Drying Temperatures on the Peanut Quality during Hot Air Drying J. Oleo Sci. 69, (5) 403-412 (2020) 405 absorption. After 3 days drying, the moisture content of ’ peanuts was 9.50. Then the peanuts were dehulled by ％ the dehusking machine. The obtained dried peanuts were dehulled and used for quality determination（control group）.

Effect of drying method on physical and chemical quality ...

Effect of drying method on physical and chemical quality, hotness and volatile flavour characteristics of dried chilli Abstract: The effects of drying methods, such as sun drying at 37 oC, hot air drying at 60 C and freeze drying, on the quality of dried Chee fah chilli (Capsicum annuum Linn. var. acuminatum Fingarh.) were investigated.

Effect of high-humidity hot air impingement blanching ...

(2019). Effect of high-humidity hot air impingement blanching (HHAIB) and drying parameters on drying characteristics and quality of broccoli florets. Drying Technology: Vol. 37, No. 10, pp. 1251-1264.

Effect of air-drying temperature on physico-chemical ...

Effect of air-drying temperature on physico-chemical, powder properties and sorption characteristics of pumpkin powders Abstract This study examined the use of hot-air drying in the preparation of pumpkin powder. The drying temperature was varied (50, 60 and 70°C) to determine the effect

EFFECT OF HOT AIR VELOCITY ON DRYING KINETICS

Effect of Hot Air Velocity on Drying Kinetics . 2737 content was measured using probe sensor digital moisture meter at a time interval of 15 min during first hour of drying, 30 min for second hour, 45 min for third hour and 60 min from fourth hour till the end of drying. ...

Effect of Drying on Total Phenolic Compounds, Antioxidant ...

The objectives of the present work were to investigate the decrease in total phenolic compounds and antioxidant activity in pears during air drying at different temperatures and to model the kinetics of those variations. The pears (cv. D. Joaquina) were dried at 60°C and 70°C in an electrical drying chamber with hot air at 0.5 m/s.

Effects of Microwave-Infrared Combination Drying on ...

Effects of microwave-assisted hot air drying and conventional hot air drying on the drying kinetics, color, rehydration, and volatiles of Moringa oleifera. Drying Technology, 29, 1452–1458. CrossRef Google Scholar. Doymaz, İ. (2011). Drying of eggplant slices in thin layers at different air temperatures.

PHT 321: Factors affecting dehydration

A. Hot air Driers: In hot air driers the food is in contact with a moving stream of hot air. Heat is supplied to the product mainly by convection. Kiln drier, cabinet tray drier, tunnel drier, conveyor drier, bin drier, fluidized bed drier, pneumatic drier, rotary drier and spray drier use hot air for drying

EFFECT OF DRYING TEMPERATURE ON FUNCTIONAL AND

Abstract: Proper drying of food products helps in extending shelf life and either maintaining or improving their quality. In this study, the effect of hot air drying temperature (at 55, 70 and 850C) in comparison to freeze drying on the functional and

Effects of hot-air and hybrid hot air-microwave drying on ...

Oct 19, 2017 Drying and physicochemical characteristics of nectarine slices were investigated using hot-air and hybrid hot air-microwave drying methods under fixed air temperature and air speed (50 °C and 0.5 m/s, respectively). Microwave power levels for the combined hot air-microwave method were 80, 160, 240, and 320 W. Drying kinetics were analyzed and compared using six mathematical models.

The Effects of Dry Air and Humidity on COPD COPD.net

Mar 06, 2019 She said that, most likely, it was a combination of using oxygen while sleeping and the drying effect the heat from radiators has on the eyes, especially if they aren’t getting regular fresh air during the night. 4

Efficacy of Various Drying Methods National Archives

Aug 15, 2016 Hilary A. Kaplan and Kathleen A. Ludwig Document Conservation Laboratory National Archives and Records Administration The Project In order to better understand how various drying methods would affect a sampling of archives materials, the effects of four drying approaches were observed and compared on sets of similar materials. Our study was performed using expendable