نتایج جستجو برای: drying durations of 20

تعداد نتایج: 21236358  

Today, sperm cryopreservation is a routine practice in infertility clinics. One of the alternative methods to preserve sperm is freeze-drying. This process consists of three steps. The first step is sample freezing, during which the solvent is separated from the solvent. Water forms ice crystals and the solute is placed between the ice crystals. Freezing may be done in a separate device or in a...

Journal: :تحقیقات مهندسی کشاورزی 0
عادل میرمجیدی عضو هیئت علمی مؤسسه تحقیقات فنی و مهندسی کشاورزی رامین حسین خواه عضو هیئت علمی مؤسسه تحقیقات فنی و مهندسی کشاورزی هما بهمدی عضو هیئت علمی مؤسسه تحقیقات فنی و مهندسی کشاورزی

rapeseed is one of the important oilseeds, as its oil ranks second in the world after soybean. the rapeseed cultivation has been increased recently in iran. drying of seeds to a safe moisture level is necessary for storage of oilseeds before processing. rapeseed drying conditions affect the seed quality, total oil and germination capacity. hence in this research the effects of different tempera...

2016
Haozhe Gan Erin Charters Robert Driscoll Chalermchai Wongs-Aree Sirichai Kanlayanarat Douglas D. Archbold

Ginger and turmeric, members of the Zingiberaceae family, are widely used for their pungent and aromatic flavour in foods and also for their medicinal properties. Both crops are often grown by smallholders in mountain areas on rich former forest soils with no need for fertilizers and pesticides, fulfilling de facto the conditions of organic agriculture. They are consumed fresh or dried. Drying ...

Journal: :مهندسی بیوسیستم ایران 0
سیما چراغی دهدزی ناصر همدمی

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...

رضوی, سید جلیل, صادقی, مرتضی, فرقانی, احسان, مهریار, اسماعیل,

Drying of fruits and vegetables is one of the oldest methods for preserving foods. Drying not only affects the moisture content of the product, but also changes other physical, chemical and biological properties of the product including enzymatic activity, microbial spoilage, viscosity, hardness, taste and aroma. In order to study the occurring changes in dried product, qualitative characterist...

2011
Fabiano A. N. Fernandes Sueli Rodrigues

Drying is one of the processes that present higher costs in food processing. Pre-treatments are often used to reduce drying time and consequently its cost. In the past years, our group has studied the use of ultrasonic pre-treatments to induce structural changes in the fruit tissue as to improve the effective water diffusivity during air-drying and consequently reduce air-drying time. This stud...

Journal: :علوم باغبانی ایران 0
سعیده محتشمی دانشجوی سابق کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران مصباح بابالار استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران سیدمحمد ابراهیم زاده موسوی استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمدحسین میرجلیلی استادیار گروه کشاورزی پژوهشکده گیاهان و مواد اولیه دارویی دانشگاه شهید بهشتی جمانه ادیب دانشجوی سابق کارشناسی ارشد پردیس کشاورزی و منابع طبیعی دانشگاه تهران

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...

Objective: Potato is the fourth important food crop after wheat, rice and maize. Shrinkage  of  food  materials  has  a negative  consequence  on  the  quality  of  the dehydrated product. The main objective pursued in this paper is to investigate the shrinkage amount of potato slices during drying process using vacuum-infrared method. Methods: In this work, the effect of the infrared radiation...

Journal: :journal of agricultural science and technology 2010
a. zomorodian m. moradi

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 ...

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