The objective of the following paper is to describe a new technology for large volume and double freezing of semen in 12 mL test tubes. Semen from two different bulls was frozen with a new technique using 12 mL test tubes and was refrozen after thawing in mini straws. All freezing was done in a "Multi thermal gradient" (MTG) freezing apparatus, which moves the container at a constant velocity (...

Egg yolk (EY) protects cell membranes against cold shock, and it prevents or restores the loss of phospholipids from the membrane. EY has been widely used in semen extenders. It has been added to Tris-Glucose buffer and has been widely used for cooling and cryopreservation of canine semen. EY is not a defined entity, but a complex biological compound containing proteins, vitamins, phospholipids...

Preservation of living tissue and organs are very important to ensure successful transplantation. The storage of living tissue, from the time of removal of the donor tissue until transplantation, is one of the most important factors for successful tissue transplantation. The purpose of living tissue storage is to maintain the viability of the mammalian cells, and various methods have been devel...

We screened for mutations deleterious to the freezing tolerance of Arabidopsis thaliana (L.) Heynh. ecotype Columbia. Tolerance was assayed by the vigor and regrowth of intact plants after cold acclimation and freezing. From a chemically mutagenized population, we obtained 13 lines of mutants with highly penetrant phenotypes. In 5 of these, freezing sensitivity was attributable to chilling inju...

The fisheries sector in Indonesia has a greater potential, namely pelagic and demersal fish populations including skipjack tuna are referred to as commodities that have high nutritional value but easily damaged because they contain lots of protein which is free amino acids for microbial metabolism. production ammonia, biogenic amines, organic acids, ketones sulfur composition. Fish one the food...

cryopreservation is the method of choice for long term storage of human pbmcs. this study was designed to compare the different combinations of variables affecting the cryopreservation of pbmcs samples. the viability of pbmcs separated from 2×5 ml peripheral blood samples obtained from 16 healthy adult volunteers, were measured using trypan blue dye exclusion method just before freezing with di...

Background: Freezing is a common and ancient method for preservation of foods which is applicable both under household and industrial conditions. The objective of the study was to establish histological and microbiological changes in dorsal and abdominal muscles of rainbow trout (Oncorhynchus mykiss) after freezing once and twice. Methods: Forty-five fresh rainbow trout specimens were distribu...

AIMS To investigate the effect of processing treatments on the destruction of white spot syndrome virus (WSSV) DNA in WSSV-infected farmed shrimps (Penaeus monodon). METHODS AND RESULTS The presence of WSSV was tested by single step and nested polymerase chain reaction (PCR). The primers 1s5 & 1a16 and IK1 & IK2 were used for the single step PCR and primers IK1 & IK2-IK3 & IK4 were used for t...

Immersion freezing (ice nucleation by particles immersed in supercooled water) is a key process for forming ice in mixed-phase clouds. Immersion freezing experiments with particles in microliter-sized (millimeter-sized) water droplets are often applied to detecting very small numbers of ice nucleating particles (INPs). However, the application of such large droplets remains confined to the dete...

Scaffolds of 13-93 bioactive glass (6Na(2)O, 12K(2)O, 5MgO, 20CaO, 4P(2)O(5), 53SiO(2); wt.%) with an oriented pore architecture were formed by unidirectional freezing of camphene-based suspensions, followed by thermal annealing of the frozen constructs to grow the camphene crystals. After sublimation of the camphene, the constructs were sintered (1 h at 700°C) to produce a dense glass phase wi...