According to an article by Otonンサー, NICHIREI FOODS reportedly cites 3 benefits of preserving komatsuna by freezing it while it is still raw.
An Otonンサー article discusses preserving komatsuna by freezing it while it is still raw and reports that NICHIREI FOODS cites 3 benefits of this method.
The article does not specify the benefits, and only reports that 3 points are cited.