tea is one of the most important medicinal plants which have a considerable effect on the treatment of cardiovascular disease and cancer. the drying process of tea leaves is carried out by hot air flow which consumes high level energy. the aim of the recent research was to investigate the procedure of high power ultrasound-assisted drying process of tea leaves. hybrid variety of chinese tea was...

date palm (phoenix dactylifera l.) with its delicious and nutritious bearing fruit (dates) is an important agricultural core in iran. to extend the shelf life of date palm fruit, some such methods of preservation as drying are suggested and drying influences physicochemical and quality characteristics of products, thus modeling of drying kinetics is one of the tools for process control. in this...

drying, is one of the important postharvest processes of medicinal plants with an important role played in quality and quantity of the drugs. in this research, in order to study the effect of growing conditions and different drying methods on drying time, essential oil content, color characteristics and microbial load of dracocephalum moldavica, a factorial experiment in randomized complete blo...

Ghale-madreseh is the first point that the saline and sulfurous streams flow into Tembi River, one of the well-known saline rivers in Khuzestan province, Iran. This river is one of the main sources of increasing Karun River’s salinity, which is the largest river in Iran in terms of discharge. There are three saline and sulfurous springs (Shour-1, Shour-2m and Namak Springs) as well as a drinkab...

this paper presents mathematical models of thin layer forced convection solar drying of cuminum cyminum using two drying methods (mixed and indirect) at different operating conditions. the average initial moisture content of the seeds for all tests was about 43% d.b. and the drying was performed continuously, in each test, for a uniform period of 90 minutes drying time in a solar cabinet dryer ...

background: geothermal waters could be suitable niches for thermophilic free living amoebae includ­ing naegleria and hartmannella . ardebil province, northwest iran is popular for having many hot springs for recreational and health purposes activity. the present research is the first molecular based investigation regarding the presence of naegleria and hartmannella in the hot springs of ardebil...

A fully instrumented air conditioning laboratory unit capable of controlling drying air temperature and humidity integrated with an instantaneous weighing thin layer drying system was used to investigate the thin layer drying behavior and desorption equilibrium moisture content of canola (Brassica napus L.). To this aim, freshly harvested canola samples with moisture content of about 12±0.5% (d...

canola is known as an important oilseeds crop throughout the world. cultivation and subsequent oil extraction of this crop has gained substatantial development in recent years in iran. many parts of iran (northern provinces) especially golestan and mazandarn are of high relative humidity during harvesting season as well as during storage periods. spoilage and rancidity are problems more encount...

Dill (Anethum graveolens L.) and parsley (Petroselinum crispum Mill.) were dried by using sun and oven (50oC) drying methods. Oven drying decreased the drying time approximately 50% when compared to the sun drying method for both herbs. K, Ca, P, Mg and Na were the most abundant elements in dill and parsley samples. Oven-dried samples had higher mineral values than that of the su...