Storing the juice can be done by freezing the juice imediatly after juiceing.Freezing does compromise the nutritional value of the juice.There are companys that flash freeze whole juice and ship it to there costomers in a frozen state.Some use freezdrying such as sweet wheat.Now as far as the cut grass is conserened it can be stored up to 10 days in a refreidgerator.The best grass juice is fresh but juicing 14-21 times a week is not practical for busy people.As with all things do the best you can and to heck with the rest.Stay healthy!!