Pay in installments of $12.50 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
pTAN:IRPsThe Protein Precipitable Tannins to Iron Reactive Phenolics ratio (pTAN: IRP) is a useful metric for understanding extraction in skin macerated wines. Iron Reactive Phenolics extract readily from grape pulp whereas Protein Precipitable Tannins require alcohol, temperature, and movements to extract from the skins and seeds. Because of this, high production wines tend to have lower ratios whereas reserve tier wines generally have higher ratios. pTAN
The Protein-Precipitable Tannins to Iron-Reactive Phenolics ratio (pTAN:IRP) is a useful metric for understanding extraction in skin-macerated wines. Iron-Reactive Phenolics extract readily from grape pulp whereas Protein-Precipitable Tannins require alcohol, temperature, and movements to extract from the skins and seeds. Because of this, high production wines tend to have lower ratios whereas reserve-tier wines generally have higher ratios. pTAN generally account for 50-55% of extractable IRPs in skin-macerated wines. This ratio will fluctuate depending on fruit quality, most notably decreasing with hotter climates.
Protein-Precipitable Tannins: Iron-Reactive Phenolics (pTAN:IRPs)
-
<0.3 is low-efficiency extraction typical of shorter macerations and larger production volumes.
-
3-0.4 is a moderately efficient extraction typical of middle-tier wines.
-
4-0.5 is a highly efficient extraction typical of premium and reserve wines.
-
>0.5 is heavily extracted typical of powerful wines.
For winemakers, these ratios are particularly useful for monitoring adherence to protocols and understanding the performance of vineyards across multiple vintages. We generally don’t place value between higher or lower ratios as a sign of quality, rather, we focus on pTAN:IRP as an indicator of extraction. Lower ratios benefit more delicate wine styles whereas high ratios benefit more concentrated wine styles. We can use the following variables to steer the type of extraction we desire based on the qualities of our fruit.
To learn more about the pTAN:IRPs ratio and how it applies to winemaking, become a Bound advising client.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy