Effect of Air-Drying Temperature on the Quality and Bioactive Characteristics of Dried Galega Kale (B rassica oleracea  L. var. Acephala)

2015 ◽  
Vol 39 (6) ◽  
pp. 2485-2496 ◽  
Author(s):  
Sara M. Oliveira ◽  
Inês N. Ramos ◽  
Teresa R.S. Brandão ◽  
Cristina L.M. Silva
Keyword(s):  
Air Drying ◽  
Drying Temperature ◽  
Galega Kale

scholarly journals Evaluation of Drying and Storage Conditions on Nutritional and Sensory Properties of Dried Galega Kale (Brassica oleracea L. var. Acephala)

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Ana C. Araújo ◽  
Sara M. Oliveira ◽  
Inês N. Ramos ◽  
Teresa R. S. Brandão ◽  
Maria J. Monteiro ◽  
...  
Keyword(s):  
Phenolic Content ◽  
Storage Conditions ◽  
Total Phenolic ◽  
Air Drying ◽  
Drying Temperature ◽  
Total Antioxidant ◽  
Nutritional Compounds ◽  
And Storage ◽  
Brassica Oleracea L ◽  
Galega Kale

This work evaluated the effect of the air-drying temperature and vacuum packaging on quality and nutritional compounds of dehydrated galega kale, previously steam blanched, during 5 months of storage. When compared with the vacuum packaged kale, the packaging without vacuum yielded improved nutritional features, in general. This approach combined with a drying temperature of 40°C resulted in retention percentages of 62, 38, 92, and 48% for vitamin C, total phenolic content, total antioxidant capacity, and chlorophylls, respectively. The acceptance of the dried product by the consumer was assessed through a focus group. The participants classified the product as a practical and convenient alternative to cook healthier dishes. The appearance of dried galega kale was described as being fragile and being with nice smell, natural colour, and flavour similar to the fresh product. In conclusion, the herein presented product was addressed as an innovation with multiple possible applications in several recipes.

scholarly journals Effects of hot air drying temperature and tempering time on the properties of maize starch

2020 ◽  
Vol 13 (6) ◽  
pp. 236-241
Author(s):  
Guangyue Ren ◽  
◽  
Ledao Zhang ◽  
Fanlian Zeng ◽  
Yebei Li ◽  
...  
Keyword(s):  
Maize Starch ◽  
Hot Air Drying ◽  
Air Drying ◽  
Drying Temperature ◽  
Hot Air ◽  
Tempering Time

scholarly journals Air-drying temperature changes the content of the phenolic acids and flavonols in white mulberry (Morus alba L.) leaves

2019 ◽  
Vol 49 (11) ◽  
Author(s):  
Monika Przeor ◽  
Ewa Flaczyk ◽  
Monika Beszterda ◽  
Krystyna Eleonora Szymandera-Buszka ◽  
Justyna Piechocka ◽  
...  
Keyword(s):  
Phenolic Acids ◽  
Phenolic Acid ◽  
Total Content ◽  
Morus Alba ◽  
Air Drying ◽  
Drying Temperature ◽  
Temperature Changes ◽  
Mulberry Leaves ◽  
White Mulberry ◽  
New Compounds

ABSTRACT: The white mulberry leaves are typically available on the market in dried or encapsulated form. It was assumed in the study that appropriate drying of leaves of the white mulberry is significant for obtaining intermediate products with high content of compounds having anti-oxidative activity. The purpose of the study was to determine the influence of the temperature of mulberry leaves air drying on the content of phenolic acids and flavonols. It has been determined that the content of these compounds in the leaves depended on the drying temperature. Drying at 60 °C favored release of phenolic acids and flavonols from complexes and/or formation of new compounds. Their total content was 22% higher than in leaves dried at 30 °C. Drying at 90 °C reduced the phenolic acid and flavonol content by 24%. The most favorable drying temperature was 60 °C.

scholarly journals Effect of drying methods on properties of green curry powder

2018 ◽  
Vol 192 ◽  
pp. 03023
Author(s):  
Natthacha Chaloeichitratham ◽  
Pornkanya Mawilai ◽  
Thadchapong Pongsuttiyakorn ◽  
Pimpen Pornchalermpong
Keyword(s):  
Moisture Content ◽  
Bulk Density ◽  
Water Activity ◽  
Freeze Drying ◽  
Total Phenolic ◽  
Drying Methods ◽  
Hot Air Drying ◽  
Air Drying ◽  
Drying Temperature ◽  
Hot Air

In this study, the effects of two drying methods: hot-air and freeze drying for Thai green curry paste in a terms of drying time and qualities have been investigated. The hot-air drying was carried out in tray dryer at temperature of 50, 60 and 70 °C. The freeze drying was carried out in freeze dryer at freezing temperature of -20°C, primary drying temperature of -10°C and secondary drying temperature of 50°C. Moisture content, water activity, colour, bulk density, and total phenolic content (TPC) were determined in samples. Freeze dried sample had significantly (p<0.05) lower moisture content, water activity, bulk density, total colour difference and browning index than hot air dried samples. For antioxidant activity, the results showed hot-air drying at 70°C effected highest TPC similar to freeze drying.

Impact of cooking and drying on the phenolic, carotenoid contents and in vitro antioxidant capacity of Andean Arracacha (Arracacia xanthorrhiza Bancr.) root

2011 ◽  
Vol 17 (4) ◽  
pp. 319-330 ◽  
Author(s):  
R. Pedreschi ◽  
I. Betalleluz-Pallardel ◽  
R. Chirinos ◽  
C. Curotto ◽  
D. Campos
Keyword(s):  
Antioxidant Capacity ◽  
Total Phenolics ◽  
Hot Air Drying ◽  
Total Carotenoids ◽  
Air Drying ◽  
Drying Temperature ◽  
Residual Content ◽  
Microwave Cooking ◽  
Hot Air

The influence of different cooking regimes such as boiling, oven, microwave and hot-air drying on the retention of total phenolics (TP), total carotenoids (TC) and in vitro antioxidant capacity (AC) for three colored arracacha roots was studied. Continuous losses of TP, TC and AC during the course of the different cooking processes were observed. Boiling at 99.5° C for 20 min turned to be the best method to cook this root due to a high retention of TP, TC and AC in comparison to oven cooking at 200° C for 45 min and microwave cooking at 800 W for 5 min. During boiling, chlorogenic and caffeic acids and derivatives remained relatively stable. The drying temperature was negatively correlated to the residual content of TP and AC for the yellow and cream arracacha roots, but for the cream/purple arracacha variety, blanching preserved the TP and AC. Significant losses in chlorogenic and caffeic acids and derivatives were mainly observed during hot-air drying. These results suggested that TP are responsible to a large extent of the AC displayed by arracacha root during the different evaluated cooking regimes.

scholarly journals Effect of Hot Air Thin Layer Drying Temperature on Physicochemical and Textural Properties of Dried Horseradish

2019 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Pranabendu Mitra ◽  
Md. Abdul Alim ◽  
Venkatesh Meda
Keyword(s):  
Textural Properties ◽  
Drying Method ◽  
Rehydration Ratio ◽  
Hot Air Drying ◽  
Air Drying ◽  
Medicinal Uses ◽  
Drying Temperature ◽  
Hot Air ◽  
Thin Layer Drying

The horseradish (Armoracia rusticana) is an important crop as ingredients for many commercial food products and medicinal uses. However, the horseradish is perishable and preservation of this crop for supplying year-round is necessary. Drying can be used to preserve the horseradish but establishing a suitable drying method and conditions are important for product quality of dried horseradish. The objective of this study was to investigate the effects of hot air-drying temperatures on the physicochemical and textural properties of dried horseradish samples to determine the appropriate hot air-drying conditions. The sliced horseradish samples were dried at 55, 65, 75, 85 and 95 ℃ using a conventional hot air drier. The physicochemical and textural properties of the dried horseradish samples were determined, and the results were compared for different drying temperatures. The ANOVA analysis indicated that the drying temperature affected the physicochemical and textural properties of dried horseradish samples significantly (p<0.05). The experimental results indicated that the moisture content (9.18-6.15%,wb), aw (0.06-0.03), porosity (31.47-12.13%) and rehydration ratio (82.74 -44.47%) decreased and piece density (0.63-0.84 g/mL), hardness (193.63 -298.31N), cohesiveness (1.04-1.32), gumminess (202.13-390.12) and chewiness (635.08-1223.55) of dried horseradish samples increased with the drying temperature. Power law model indicated that the porosity was linearly corelated to the rehydration ratio of dried horseradish samples. The overall results revealed that relatively lower (55-65 ℃) drying temperature range was suitable to keep the quality of the dried horseradish samples. The findings of this study are expected to be helpful for the commercial drying of horseradish samples using hot air-drying method.

scholarly journals Influence of Different Hot Air Drying Temperatures on Drying Kinetics, Shrinkage, and Colour of Persimmon Slices

Foods ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 101 ◽  
Author(s):  
Senadeera ◽  
Adiletta ◽  
Önal ◽  
Di Matteo ◽  
Russo
Keyword(s):  
Moisture Content ◽  
Quadratic Model ◽  
Drying Process ◽  
Air Velocity ◽  
Hot Air Drying ◽  
Drying Time ◽  
Air Drying ◽  
Drying Characteristics ◽  
Drying Temperature ◽  
Hot Air

Drying characteristics of persimmon, cv. “Rojo Brillante”, slabs were experimentally determined in a hot air convective drier at drying temperatures of 45, 50, 55, 60, and 65 °C at a fixed air velocity of 2.3 m/s. It was observed that the drying temperature affected the drying time, shrinkage, and colour. Four empirical mathematical models namely, Enderson and Pabis, Page, Logarithmic, and Two term, were evaluated in order to deeply understand the drying process (moisture ratio). The Page model described the best representation of the experimental drying data at all investigated temperatures (45, 50, 55, 60, 65 °C). According to the evaluation of the shrinkage models, the Quadratic model provided the best representation of the volumetric shrinkage of persimmons as a function of moisture content. Overall, higher drying temperature (65 °C) improved the colour retention of dried persimmon slabs.

Effect of air drying temperature on the quality of rehydrated dried red bell pepper (var. Lamuyo)

2008 ◽  
Vol 85 (1) ◽  
pp. 42-50 ◽  
Author(s):  
A. Vega-Gálvez ◽  
R. Lemus-Mondaca ◽  
C. Bilbao-Sáinz ◽  
P. Fito ◽  
A. Andrés
Keyword(s):  
Bell Pepper ◽  
Air Drying ◽  
Drying Temperature

Effect of Air-Drying Temperature on Kinetics of Quality Attributes of Lemon (Citrus limoncv. lunari) Peels

2015 ◽  
Vol 33 (13) ◽  
pp. 1581-1589 ◽  
Author(s):  
Nesrine Ghanem Romdhane ◽  
Catherine Bonazzi ◽  
Nabil Kechaou ◽  
Nourhène Boudhrioua Mihoubi
Keyword(s):  
Quality Attributes ◽  
Air Drying ◽  
Drying Temperature ◽  
Kinetics Of
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