کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9912200 1549448 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cryopreservation of a marine microalga, Nannochloropsis oculata (Eustigmatophyceae)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Cryopreservation of a marine microalga, Nannochloropsis oculata (Eustigmatophyceae)
چکیده انگلیسی
The cryopreservation of algae could prevent genetic drift and minimize labor costs compared to the current method of maintenance and subculturing. Clear, simple protocols for cryopreservation of marine microalga, Nannochloropsis oculata were developed and cryoprotectant choice and concentration optimized. The viability of the microalga was assessed directly after thawing, and algal concentration was measured after 2-30 days of growth. Five cryoprotectants (dimethyl sulphoxide, Me2SO; ethylene glycol, EG; glycerol, Gly; methanol, MeOH; and propylene glycol, PG) at five concentrations (10, 20, 30, 40, and 50%; v/v) were evaluated to determine the toxicity of various cryoprotectants to N. oculata. The toxicity of cryoprotectant (Me2SO, EG, MeOH, and PG) was observed only at higher concentrations of CPAs: >20% for EG, >30% for Me2SO and methanol, and >40% for PG. Direct freezing of algae in liquid nitrogen resulted in a severe loss of viability and a modified cryopreservation protocol proved to be more appropriate for the preservation of N. oculata. Cryopreservation protocols developed and tested in the present study might be applied to cryopreserving other strains, or species, in this genus.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cryobiology - Volume 50, Issue 3, June 2005, Pages 338-343
نویسندگان
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