Resources

We believe in providing our clients with the best information and resources pertaining to beverage fermentation and winemaking. Here we have information on sending and testing samples, how to take correct measurements, fermentation tips and more. Contact us today if you have any questions on 1300 30 22 42.

Allergen Residue Analysis

From 1 July 2012, new allergen labelling requirements came into effect in the European Union (EU). If milk (casein) or egg products have been used and the wine has not tested negative for these residues using a technique with a detection limit of 0.25mg/L, then the presence of allergens must be indicated on the label. […]

Take care of your pH electrode!

Measuring pH is one of the most important tests in the winery but it can also be one of the most frustrating.  A sluggish or non-reproducible response indicates that the pH reading may not be accurate.  Can you trust the equipment you’re using? Taking a few simple steps to look after the electrode each time […]

Post Fermentation spoilage compound analysis

With harvest coming to an end in most regions of Australia, many of you will be happy to put the challenges of this growing season behind you! Primary and secondary fermentations are now in full swing which brings a new set of challenges, such as producing wines without excessive levels of spoilage compounds. Three compounds […]

Product Tip: Malic acid testing by Thin Layer Chromatography (TLC)

For best results take note of the following: Sample make sure your Sample spots are as small & concentrated as possible. always allow the spots to dry between applications. Solvent It is most important to ensure the plate is completely dry between the applications of Solvent & Indicator. Use warm air from a hairdryer to […]

Lab Tip: De-gas your TA sample to get accurate results

It is good practice in a winery lab to always degas wine samples prior to analysis of titratable acidity (TA). This is of particular importance at this time of year for wines that have just finished primary or secondary fermentation, as they can contain a high concentration of dissolved carbon dioxide. In wine, carbon dioxide […]

Standardising Sodium Hydroxide Solutions

“Do you know the correct concentration of your sodium hydroxide solution?” Introduction Sodium hydroxide (NaOH) solutions are one of the main reagents used in a wine laboratory. The accuracy of your Sulfur Dioxide, Titratable Acidity (TA) and Volatile Acidity (VA) results are dependent on these solutions having accurately known concentration values. NaOH absorbs carbon dioxide […]

Product Tip : Dilution rates for samples when using Enzymatic Test Kits

The concentrations of the Standards we supply with our kits are designed to give a good working range with a typical spectrophotometer. For example, the Ammonium Standard is typically 40 mg/L (ppm); this gives an absorbance of around 0.5 absorbance units. Likewise the Malic Acid Standard is typically around 0.2 g/L and gives an absorbance […]

Product recommendation March 2012 – Anchor NT50

Anchor NT50: A yeast for producing fruity red wines NT 50 enhances red berries (strawberry, raspberry and cherry), black berries (blackberry and black currant) and spicy aromas in red wines. It is suitable for wine with or without wood maturation. It is most suited for vinifying Shiraz, Grenache, Pinot Noir, Gamay, Cabernet Franc and Zinfandel. […]

Anchor NT202 Co-inoculant bacteria

The team at Anchor Yeast have had published an article in the March 2012 issue of Grapegrower and Winemaker magazine on the newly released NT202 Co-inoculant bacteria. The conclusion was that Anchor NT 202 Co-Inoculant when used with Anchor Yeast NT 202 ensure a simple, secure and speedy AF and MLF. Advantages over inoculation after […]

Measuring Yeast Assimilable Nitrogen (YAN)

Maintaining an adequate supply of nitrogen is essential for a successful fermentation, as both deficiency and excess of nitrogen can cause problems. Increased production of hydrogen sulphide is associated with low nitrogen availability, which can then lead to sluggish or stuck ferments. Conversely, excess nitrogen present at the completion of fermentation can be used by […]

Vintage Woes

Introduction Another vintage and the usual suspect samples, and more, arrived in our laboratories. The main feature of this vintage that will be remembered is the highest atmospheric temperatures ever recorded in Southern Australia. The temperatures in the high 40s on the Celsius scale that were experienced in February affected fruit throughout South East Australia […]

All you ever wanted to know about wine tannins but were too afraid to ask

Introduction The topic of tannins is about to come up at the Annual ASVO Oenology seminar on October 6th in Adelaide. To try and prepare those attending the seminar, the following article discusses some basic concepts about tannins and their application in wine. It’s difficult to discuss tannins without getting into some serious chemistry; so […]

Smoke taint in Winegrapes from the Victorian Bushfires of 2009

Introduction In the May 2007 issue of Grapegrower and Winemaker we discussed the impact of smoke from bushfires in the North East and Eastern regions of Victoria on grapes grown in these and surrounding regions (1). This current vintage has seen an unprecedented incidence of bushfires in Victoria, in several cases involving vineyards being burnt. […]

Preparing your winery laboratory for vintage

Introduction There are a number of things to consider in preparing your wine lab for vintage. The major areas of laboratory equipment and the consumables needed to run them, the calibrations of the equipment and the standardisation of the consumable solutions are discussed below. The membership of proficiency programs is also promoted as a way […]

Malolactic Fermentation Monitoring

Introduction Accurate monitoring of Malolactic fermentation (MLF) is one of the most critical analytical parameters in red winemaking, but one that is commonly overlooked prior to bottling. We are often asked to investigate causes of red wine spoilage, and one of the first questions we ask the winemaker is “what was the malic acid concentration […]

Successful Malolactic Fermentations

Introduction Malolactic fermentation (MLF) can be one of the most problematic areas that a winemaker has to manage. The advent of commercial preparations of bacterial cultures for MLF has both simplified and improved this difficult area. Research is ongoing on MLF and the results of this work is helping to further improve these preparations and […]

Managing potential microbial problems during crushing or pressing grapes

Introduction The crushing or pressing of grapes may seem like one of the simplest parts of the winemaking process, however it is at this stage that problems may start which will affect the quality of the wine at a later stage. These problems are mainly related to the microbiology (and related chemistry) of what is […]

Botrytis cinerea: Australian vintage 2011

Introduction The amount of vineyards affected throughout South East Australia by Botrytis cinerea in vintage 2011 was very high. In this article we look at the effects this fungus can have on wine quality, how to test the impacts and what can be done to overcome these effects. What is Botrytis Cinerea? Botrytis cinerea is […]

Automation in the Wine Laboratory

Introduction The introduction of automated methods of testing in wine laboratories has been ongoing for many years. In this article the tests that can be easily automated and the types of instruments available are discussed. The benefits and the problems of installing automated equipment are also outlined. Why automate? One of the main aims of […]

Agricultural chemical residue analysis in wine

Introduction Agricultural chemicals are used widely in the wine industry to ensure that sound grapes are delivered to wineries. The use of these chemicals is tightly controlled by government agencies. Limits are set for the amount of residual chemical that is allowed in wine and elaborate testing is available commercially to ensure that these limits […]