About a month ago, I started making a dairy-free drink with blended fruit (i.e. Strawberries, Raspberries, etc). I'd like to start lacto-fermenting these smoothies but a friend of mine insists that the sugar content is too high and it would be impossible for bacteria to grow in it.
Can bacteria (namely Lactobacillus) grow in high concentrations of sugar? If not, why and would the sugar content of my blended fruit be too high to allow bacteria fermentation? Would it be possible to lacto-ferment things like Orange Juice or Apple Juice?