Effect of combined microwave-hot air drying and superheated steam drying on physical and chemical properties of rice

2016 ◽  
Vol 51 (8) ◽  
pp. 1851-1859 ◽  
Author(s):  
Sawanee Horrungsiwat ◽  
Nantawan Therdthai ◽  
Wannasawat Ratphitagsanti
2020 ◽  
Vol 44 (1) ◽  
pp. 114-123
Author(s):  
Kieu Hiep Le ◽  
Thi Thu Hang Tran ◽  
Evangelos Tsotsas ◽  
Abdolreza Kharaghani

2014 ◽  
Vol 1008-1009 ◽  
pp. 892-896
Author(s):  
Wen Guang Geng ◽  
Ling Gao ◽  
Xiu Li Ma ◽  
Xuan You Li

The paper presents a novel drying system which includes a superheated steam drying and a hot air drying. The conventional viscose fiber drying is experimental studied and the drying quality and energy consumption were analyzed. In the experiments, the temperature of superheated steam covered the range from 120°C to 150°C and, hot air temperature is about 80°C. A series of drying kinetics curves were determined to optimize the operation parameters. The results show that the combined drying has high energy efficiency because of the exhaust heat recovery from superheated drying period.


2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Chonthicha Kongkwamcharoen ◽  
Arunporn Itharat ◽  
Weerachai Pipatrattanaseree ◽  
Buncha Ooraikul

Crinum asiaticum Linn. has been used in Thai traditional medicine to relieve inflammatory symptoms and treat osteoarthritis. There have been reports on its potent anti-inflammatory property but nothing on the effects of different pretreatments on its chemical properties and anti-inflammatory activity. Pretreatment of herbal raw materials is an important step which affects the overall quality of Thai traditional medicine. The objectives of this study were to investigate different treatments of C. asiaticum leaves prior to ethanolic extraction and to compare the extracts for their anti-inflammatory activity and chemical properties. The treatments included hot air drying in an oven, microwave drying, traditional grilling on a charcoal stove before drying in an oven, and temperature shock in hot and cold water before hot air drying. The anti-inflammatory activity and chemical properties of the extracts were analyzed using the established methods. Results showed that 95% ethanolic extract of hot air oven-dried leaves had the highest anti-inflammatory activity and total phenolic and lycorine contents. We recommend hot air drying as a preextraction treatment for C. asiaticum leaves for its simplicity, best retention of the herbal quality, and suitability for scaling up to an industrial process.


1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.


2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.


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