Vintessential: Amino Acid Test Kits for Wine

During fermentation of grape juice, yeasts require nitrogen as a nutrient, with a portion provided by primary amino acids. This test kit is suitable for measuring the primary amino acid nitrogen content in grape juice and non-fermenting must.

The Yeast Available Nitrogen (YAN) content of the juice can be determined by adding this PAAN content to the Ammonia Nitrogen (AN) content.

Amino Acid 30 Test kit

Product Code: 4A110

Please note these tests require the use of a spectrophotometer.

Reagent No.	Reagent	Preparation	Quantity	Stability
1	Buffer	Ready to use	2 x 33 mL	Stable
2	NAC	Add 30 mL of distilled water & mix until dissolved	30 mL	(6 months at 4°C once dissolved)
3	OPA	Ready to use	3.3 mL	>2 years at 4°C
4	Standard	Ready to use	3.3 mL	2 years at 4°C