Bananas

[Yorksman]

Thanks, I didn't realise we were now talking about insoluble fibre. 'Carbs and cals' states 14 g carbohydrate and 2 g fibre for a single Weetabix.

I don't eat weetabix either. They are borderline high GI at 69. They belong to one of those commercially manufactured foods that suggest lots of health and fibre but are in fact, full of highly refined starch. Compare it to a Mars bar at 68 GI. Wholemeal spaghetti is only 38.

Commercial manufacturers know all the regulations and all the tricks. The fibre tends to be added and is not the original fibre contained in the grain. They do this to speed up the cooking. So they take it out and then they put some, but not all, back in. Meanwhile, the endosperm is pounded and heated until it's destroyed. It's all done to give the appearance of a rolled whole grain of wheat pressed together to form a nutritous block of goodness, but it's an industrially produced food.

 

[Yorksman]

Can we bottle this cellulose you speak of?

It's more likely to be used in the manufacture of the plastic bottle than its contents. There is oly one type of beta carbohydrate that some humans can digest and that is the lactose in milk. Most humans cannot digest it in adulthood though and those that do produce a specialised enzyme called lactase.

There are however many synthetic sweeteners and sugar substitutes and these work in a similar way to beta carbs. The body doesn't produce any enzyme which can digest them so they pass right through you. However, they are usually associated with stomache upsets and frequent trips to the loo if consumed in large quantities.