pricipitates in bottles

[mikealangevin]

I have been brewing for about a year, mostly extract kits couple of boilers,no problems. Last two batches have had this floating white chunky precipitate in them. Beer is good floaters have not taste, break up when bitten, not hard but not waxy either. I suspected inuculation so I sterilized everything, then took extra precautions with sanitation on brew day. Same thing. Made me think real hard at any changes and the only one i could come up with was i started using Muntons priming tabs and coopers drops. I bottle in liters and 12 oz. Coopers easier with liters and muntons has more opions with the small bottles. Well i would mix the drops and tabs with the liters to hopefully get the level of carbonation i liked. So this brew i used coopers in half the bottles and muntons in the other half and low and behold precipitate in only the muntons tabs. Anybody else had this occur? Could there be a binder in the tabs?

 

[Trappist Artist]

The ingredients for the Muntons priming tabs are Dextrose, Spray-Dried Malt Extract, and Heading Powder (PGA).
I can only come up with two ideas here:

1.) The malt extract may not have gone through a protein break so the flakes could be some type of a protein (albumin proteins?)

2.) I have no idea what heading powder is so that might have something to do witht he flakes.

 

[david_42]

Heading powder - propylene glycol alginate - Derived from a type of seaweed. Sounds krunchy.