"0.1 g leaf tissue (with similar age, and young expanded leaf may be better) is ground into powder with liquid nitrogen, and then put the powder into a tube containing 1 ml 0.1% (w/v) TCA and mix by inverting the tube to homogenize the leaf tissue."
I have a problem with many samples of plants that I collect in the same age. Can I store the samples, after I scoured with liquid nitrogen in Trichloroacetic acid for next days MDA analysis?