HARVEST SERIES Dealing with challenging grapes. Eglantine Chauffour, Enartis USA

Transcription

1 HARVEST SERIES 2017 Dealing with challenging grapes Eglantine Chauffour, Enartis USA

2 WEBINAR INFORMATION 40 minute presentation + 20 minutes Q&A Save Qs until the end of the presentation Use chat box for audio/connection issues. Recording in progress Poll questions poll

3 DEALING WITH CHALLENGING GRAPES 1. Handling Botrytis or Mildew 2. Managing Green characters 3. Limiting Smoke taint poll

4 HANDLING BOTRYTIS, MILDEW AND OTHER ROTS Limit extraction Antioxidant Antimicrobial Mask

5 MAIN CHALLENGES WITH ROTS Microbial contamination Difficulties in clarification and filtration Oxidation Moldy off-flavors Presence of Ochratoxin A (OTA) Stuck/sluggish fermentation Higher bound SO 2 High ph, low TA issues poll

6 REDUCE LACCASE ACTIVITY ENARTIS TANNIN DOSAGE REDUCTION OF LACCASE ACTIVITY (%) TAN ANTIBOTRYTIS 20 g/hl 60 Applications g/hl As early as possible Harvest, crusher Whites and Reds On grapes

7 YEAST NUTRITION - INOCULATION Improve yeast resistance and performance Amino acids Vitamins Cations Micro-nutrients

8 TOOLS TO MANAGE BOTRYTIS AND OTHER ROTS Strong clarification Fining offflavors Limit skin contact Dominant yeast Boost aromas production Mask off flavors Rack off lees early

9 BOTRYTIS ON WHITE GRAPES Pressing Fermentation Ageing cold Sort GrapesProcess No crushing No destemming Tan Anti- Botrytis Separate presses Enartis Stab Micro M Enartis Zym Elevage Enartis Zym RS Correct ph and TA Claril SP Enartis Ferm Aroma White Nutriferm Energy Nutriferm Arom Plus Enartis Pro R Rack lees as early as possible Enartis Stab SLI Laccase activity test PCR for botrytis Gluconic acid test Filterability index Glucan test

10 Grapes Fermentations Ageing BOTRYTIS ON RED GRAPES Sorting (if possible) No crushing, no destemming Tan Anti-Botrytis Enartis Zym Color Plus Enartis Stab Micro M Incanto NC Nutriferm Energy Enartis Pro Round Rack lees as early as possible Press early (5-6 Brix) ML Silver + Nutriferm ML Rack clean Enartis Zym Elevage Enartis Surli Round Laccase activity test PCR for botrytis Gluconic acid test Filterability index Glucan test

11 2- GREEN CHARACTERS MANAGEMENT Green tannins Lack of volume Lack mid palate Lack of color

12 TOOLS TO MANAGE PYRAZINES Minimize pyrazine content Limit skin contact Strong clarification Rack off lees early Eliminate by volatilization Thermo-treatment Hot fermentation Mask Boost aromas production Aromatic precursors Oak Balance mouthfeel Polysaccharides Grape tannins

13 TOOLS TO MINIMIZE C6 COMPOUNDS Anti-oxidant protection O 2 Minimize C6 compounds content Limit skin contact Strong clarification Rack off lees early Mask Transform C6 compounds O 2

14 REACTIONS Cysteine, GSH, Methionine GST-Glutathion-Transferase(J.Castell) Cysteine or GSH conjugated thiol ODORLESS β-lyase AWRI

15 ENARTIS RANGE SH DONOR

16 Grapes GREEN CHARACTERS - WHITE GRAPES Pressing Fermentation Ageing Process cold AST Separate hard presses Enartis Zym RS Claril SP Enartis Ferm ES 181 Nutriferm Arom Plus Enartis Pro Blanco Tan Citrus Rack lees as soon as possible Enartis Surli One

17 Grapes GREEN CHARACTERS ON RED GRAPES Ageing AST Enartis Zym Color Plus Nutriferm Arom Plus ES488 or D20 Enartis Pro Blanco Enartis Tan Color FermentationIncanto NC Nutriferm No Stop Rack and press early (5-6 Brix) Rack clean Tan E Enartis Surli Round

18 SMOKE TAINT Analysis Limit extraction Mask

19 TOOLS TO MANAGE SMOKE TAINT Know the level of risk Minimize smoke taint precursors content Limit skin contact Strong clarification Rack off lees early Mask Boost aromas production Aromatic precursors Untoasted Oak Remove smoke taint compounds

20 COMPENSATION FOR LIMITED SKIN CONTACT Thermo-vinification Fermentation Temperature Stabilization of color poll

21 Reach Enartis team: (707) Website: THANK YOU FOR YOUR ATTENTION