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WineEast additions to give the yeast a little more time to metabolize the compound. As noted earlier, SO2 will bind with anthocyanin, resulting in a phenomenon known as sulfite bleaching. The end product of this reversible reaction is a colorless compound called anthocyanin-4- bisulfite. This can be an issue in lighter reds and rosés, and care should be taken not to overdo SO2 lower SO2 . This may be a case where a addition is in order. Lab trials can be used to predict the amount of color loss you can expect. With time, most antho- cyanins will revert to their colored form. When stopping fermentation with refrigeration, it is best to chill the wine to cessation before adding SO2 dehyde production by the yeast. This significant SO2 degree of comfort if you get busy with other projects. With blending, clarifying and aging, the wine enters the next stage of production that requires a more individualized approach to SO2 usage. Ways to monitor and adjust SO2 will be discussed in part two of this article. WE WinePkgingNaylor_Dir11.qxp 11/24/10 4:0 Wine Packaging by Naylor Naylor is the premier supplier to over 2000 wineries, wine shops and distributors in the US and Ca. WPN's products are biodegradable and recyclable.Our shipping boxes have been approved by Fed Ex & UPS and our in-stock items include wine carriers, gift boxes and wine shippers.Our design team can assist you with specialized packaging and custom imprinting. during aging and bottling to avoid stimulating acetal- addition early in a wine's life will afford some This same addition is acceptable for wines following comple- tion of ML. When using paper chromatography to determine a wine's malate status, be aware that a wine can read malate negative and still contain traces of malate. For this reason, I like to wait a week or two after a negative malate reading to ensure completion of the secondary fermentation. If diacetyl (buttery aromas) levels are excessive at the end of ML, delay SO2 CO2 and SO2 COMPANY American Tartaric Products Inc. Carolina Wine Supply Davison Winery Supplies Enartis Vinquiry Foss North America Inc. GW Kent Inc. Lodi Winery Laboratory Metrohm USA Inc. Optek-Danulat Inc. Scott Laboratories Inc. Unitech Scientific LLC Analyzer/Equipment Suppliers PHONE WEBSITE (707) 836-6840 americantartaric.com (336) 677-6831 carolinawinesupply.com (503) 472-1711 dwinesupplies.com (707) 838-6312 enartisvinquiry.com (800) 547-6275 foss.us (734) 572-1300 gwkent.com (209) 339-1990 lodiwinerylaboratory.com (866) METROHM metrohmusa.com (888) 837-4288 optek.com Research & Development Glass Products & Equipment (510) 547-6464 go.to/randd (707) 765-6666 scottlab.com (562) 924-5150 unitechscientific.com For more on laboratory instrument suppliers, see Wines & Vines' 2011 Buyer's Guide in print or online at winesandvinesbuyersguide.com. Chris Stamp is president and winemaker at Lakewood Vineyards in Vance_Jan11.qxp 11/23/10 9:29 AM Page 1 Watkins Glen, N.Y. He started his career in wine as winemaker at Plane's Cayuga Vineyards in the Finger Lakes, and in 1986 took a position as enology research and extension associate at the Ohio Agricultural Research Development Center in Wooster, Ohio. When his family opened Lakewood Vineyards winery in 1988, he returned to New York to become the wine- maker there. To comment on this article, e-mail edit@winesandvines.com. www.naylorpackaging.com (800) 292-3370 or (717) 993-2431 Fax (717) 993-9460 4138 Vineyard Rd. Stewartstown, PA 17363 sales@naylorwine.com is a lifetime member of Wine America and the PA Wine Association. a winery for over thirty-five years & Naylor Wine Cellars has been Wines & Vines MAY 2011 65