Plant-based proteins do not stimulate muscle growth as well as animal-based. It is less digestible and contains lower levels of branch-chain amino acids. But I do not think that this is a good enough reason to favour animal-based protein: I will explain why below:
Plant proteins in sufficient quantities can help us to build muscle and strength – the numerous elite-level plant-based athletes are a testament to this. When plant protein is eaten at higher levels, the problems of lower digestibility and anabolic potential are overcome.
For example, this study found no differences in terms of muscle adaptations following resistance training between those consuming 1.6g of plant protein p/kg/day; compared to those eating the same amount of animal protein.
Plant proteins are universally associated with better health outcomes and surrogate measures of health compared to animal proteins.
Lower bioavailability/digestibility can be overcome and should not lead us to choose animal sources of protein. A well-planned diet, low in animal proteins (but high in plant proteins) would seem to give us the best chance of both a strong body and good long-term health.
To make table sugar from sugar beets involves a level of processing which seems to me more akin to creating a pharmaceutical grade substance than a foodstuff.
I will list the processes below.
Sugar beets are washed and cut into chips and boiled.
Only the water is used to make suagr -- the 'chips' are used to create pet food.
Next the 'sugar water' is cleaned with limewater and then filtered.
The water is boiled 6 times.
Then it is boiled again, this time under low pressure -- creating crystals in the liquid.
The syrup is then spun in a centrifuge and the crystals are collected.