Please try this....

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.nature.com/articles/s41598-020-76726-7.pdf%3Forigin%3Dppub&ved=2ahUKEwj_3sPK4qPwAhV1muYKHd0iA2UQFjAGegQIDRAC&usg=AOvVaw1oEmUkUkDcEcmTFbtSEMAn

Siddhartha Pati thanks for your suggestion, It will be helpful to me.

Hi.

There are a lot of methods, but first, to preserve in good conditions, it depends on the analysis you want to perform later.

Regards. Y

Younes Boundir we are going to do for some analysis like anti-bacterial, anti-viral, anti-fungal and now I preserved that algae in the refrigerator.

In refrigerator -4°C should be fine.