Video | Agriculture | Confidence | Economy | Energy | Employment | Finance | Media | Property | RBNZ | Science | SOEs | Tax | Technology | Telecoms | Tourism | Transport | Search

 

Are microbes the key to geographical differences in wine?

Are microbes the key to geographical differences in wine?

A new study of six of New Zealand’s major wine-growing regions has found that differences in flavour and aroma of wine from different areas may depend more on microbes than was previously thought.

Classically the reason that wine, and other agricultural crops such as coffee, from different places tastes and smells different was thought to be due to a range of environmental reasons such as climate and soil minerals. The idea that organisms such as microbes played a role in this was not appreciated until very recently.

Previous work by Associate Professor Mat Goddard and Research Fellow Sarah Knight from the School of Biological Sciences published in Nature’s microbial ecology journal ISME demonstrated that different regions of New Zealand have different types of the main yeasts (Saccharomyces cerevisiae) that ferment juice into wine.

The latest research, published in Nature’s Scientific Reports, investigates whether yeasts from these regionally genetically different populations made any difference to a range of wine compounds known to affect aroma and flavour.

Starting with the same grape juice they made replicate batches of wine with the genetically different types of yeasts from six different areas in New Zealand, and then analysed the concentrations of 39 different compounds, known to be derived from yeast during the fermentation process, that affect the flavour and aroma of wine. They found that 29 of these compounds vary depending on which region the yeast originated from.

Dr Goddard said: “We believe that this is the first direct experimental evidence showing that microbes help define why you get different wine in different places, or the idea of ‘terroir’. The regional distinctiveness of wine plays a major part in its value, and there is a lot of interest in what drives terroir. Classically it was thought that it was down to climate and soils, but our research shows biology also plays a part.

“These findings could be very important because if this is true for wine, it may also be true for other agricultural crops.”

The researchers believe that their study could have wide-ranging implications for sustainable agriculture. Their findings indicate the importance of characterising and understanding biodiversity and the services it may provide, and this could therefore be extended to other important agricultural commodities.

The research was conducted as part of New Zealand Winegrowers and Plant & Food Research’s wine research programme, which aims to identify the key components of vineyard management and winemaking that influence wine flavour and aroma, particularly those that contribute to the unique flavours found in Marlborough sauvignon blanc.

“New Zealand has a reputation for delivering wines with unique flavours that are recognised by global consumers for their novelty and high quality,” says Damian Martin, Science Group Leader Viticulture & Oenology at Plant & Food Research.

“Understanding how these flavours are influenced by growing region, environmental factors and vine management techniques will provide winemakers with tools and technologies to capitalise on this knowledge and maintain New Zealand’s position as a premium winemaker, as well as support the industry in gaining entry into new, emerging markets.”

ENDS

© Scoop Media

 
 
 
Business Headlines | Sci-Tech Headlines

 

Mining: OceanaGold Announces Receipt Of WKP Mining Permit

MELBOURNE, Australia, Aug. 6, 2020 /CNW/ - OceanaGold Corporation (TSX: OGC) (ASX: OGC) (the 'Company') is pleased to announce it has received the mining permit for Wharekirauponga ('WKP') on the North Island of New Zealand. ... More>>

ALSO:

Economy: COVID-19 Lockdown Has Widespread Effects On Labour Market

In the June 2020 quarter, the seasonally adjusted unemployment rate fell to 4.0 percent, down from 4.2 percent last quarter, while underutilisation rose, Stats NZ said today. More>>

ALSO:

NZ Post: New Research By NZ Post Shows Online Shopping Grew 105% In Alert Level 3

New research by NZ Post into how the COVID-19 response has impacted the way Kiwis shop online, shows online shopping increased 105%* when the country moved into Alert Level 3, and may have changed the way Kiwis shop permanently. Online spend peaked ... More>>

ALSO:

Banking: Westpac NZ Lowers Merchant Fees For Small Businesses

Westpac NZ is rolling out a new merchant fee pricing structure that will lead to cost savings for more than 10,000 small and medium Kiwi businesses, and could make contactless transactions more widely available for customers. On 1 September, most ... More>>

REINZ: Million Dollar Plus Property Sales Increase 11.7% Nationally

The number of properties sold around the country for one million dollars or more during the first half (H1) of 2020 increased by 11.7% compared to H1 2019, with 5,426 million-dollar plus properties sold (up from 4,858 in H1 2019) according to the Real ... More>>

Waste: Government To Regulate Plastic Packaging, Tyres, E-Waste

The Government is stepping up action to deal with environmentally harmful products – including plastic packaging, tyres and e-waste – before they become waste. As part of the wider plan to reduce the amount of rubbish ending up in landfills, ... More>>

ALSO:


Antarctica NZ: Ice-Olation

Antarctica New Zealand is gearing up for a much reduced season on the ice this year and a very different deployment to normal! Before they head to one of the remotest places on the planet, all personnel flying south with the New Zealand programme will ... More>>

ALSO:

QV Valuations: July House Price Index Illustrates Market Resilience

According to the July 2020 QV House Price Index (HPI) results out today , property values recorded a marginal increase, up 0.2% over the month. This is somewhat of a turnaround from June, after the national index edged 0.2% lower. More>>

ALSO:

Property: Queenstown Rents Experience Biggest Drop In Seven Years

Rental prices in the Queenstown-Lakes district saw the biggest annual percentage drop in seven years after falling 28 per cent on June last year, according to the latest Trade Me Rental Price Index. Trade Me Property spokesperson Aaron Clancy said ... More>>

Seismology: The Quiet Earth

As many daily activities came to a halt during lockdown, the Earth itself became quiet, probably quieter than it has been since humans developed the technology to listen in. Seismologists have analysed datasets from more than 300 international ... More>>

RNZ: James Shaw Says Kiwibank, Not Ministers Should Decide On Investors

Climate Change Minister James Shaw says Kiwibank's decision to stop doing business with companies dealing in fossil fuels is the right one. More>>

ALSO:

FMA: Kiwis Confident Financial Markets Will Recover From COVID-19, Plan To Increase Investments

Despite the majority (60%) of investors experiencing losses as a result of COVID-19, the outlook on investing remains positive, according to a Financial Markets Authority (FMA) survey. Most Kiwis (71%) were optimistic that the pandemic will pass eventually ... More>>

FIRST Union: Warehouse Using Covid For Cover As Extensive Restructure Makes Everyone Worse Off

(FIRST Union comments on The Warehouse consultation and proposed restructure) 'Unfortunately the Warehouse have done the disappointing thing and used Covid-19 to justify a bunch of operational business decisions that will leave hundreds of workers without jobs ... More>>

ALSO: