跳转到主要内容
  • 认证合作伙伴
  • 关于 ELGA
    • 关于 ELGA
    • 招贤纳士
    • 活动
  • 支持
    • 实验室规划
    • 注册产品
    • Register Your Product (USA & Canada Only)
  • 联系信息
  • English
  • Deutsch
  • Español
  • Français
  • Italiano
  • Português
  • 日本語
首页 ELGA LabWater
  • 产品
    • PURELAB
    • CENTRA
    • MEDICA
    • BIOPURE
    • ELGA 全产品系列
  • 应用
    • 一般实验室用水要求
    • 临床生物化学
    • 免疫化学
    • 分光光度测定法:
    • 原子光谱分析法
    • 微生物分析
    • 气相色谱分析法
    • 液相色谱
    • 电化学
    • 细胞培养
    • 质谱分析法
    • 遗传学
  • 水纯化技术
    • PureSure
    • 反渗透法
    • 活性碳
    • 电去离子法
    • 离子交换法
    • 紫外线照射法
    • 过滤
  • 水中杂质
    • 微生物和细菌
    • 微粒
    • 无机化合物
    • 有机化合物
    • 溶解气体
  • Knowledge
    • 博客
    • 案例分析
    • 超纯水
    • 白皮书
  • 产品
    • PURELAB
      • PURELAB® flex 1 & 2
      • PURELAB® flex 3 & 4
    • CENTRA
      • CENTRA® 60/120
      • CENTRA® RDS
      • CENTRA® R200
    • MEDICA
      • MEDICA® 7/15
      • MEDICA® EDI 15/30
      • MEDICA® Pro EDI 60/120
      • MEDICA® Pro-LPS
      • MEDICA® Pro-R 和 Pro-RE
      • MEDICA® R200
    • BIOPURE
      • BIOPURE 7/15
      • BIOPURE 60/120
      • BIOPURE 200/300/600
    • ELGA 全产品系列
      • PURELAB® Classic
  • 应用
    • 一般实验室用水要求
    • 临床生物化学
    • 免疫化学
    • 分光光度测定法:
    • 原子光谱分析法
    • 微生物分析
    • 气相色谱分析法
    • 液相色谱
    • 电化学
    • 细胞培养
    • 质谱分析法
    • 遗传学
  • 水纯化技术
    • PureSure
    • 反渗透法
    • 活性碳
    • 电去离子法
    • 离子交换法
    • 紫外线照射法
    • 过滤
  • 水中杂质
    • 微生物和细菌
    • 微粒
    • 无机化合物
    • 有机化合物
    • 溶解气体
  • Knowledge
    • 博客
      • Analytical Chemistry
      • Clinical & Pharma
      • Cool Science
      • Environment and sustainability
      • Life in the lab
      • Purelab product design
      • Science of the future
      • Water Purity
      • Water in the lab
    • 案例分析
      • 雅培诊断的南亚团队选用 ELGA MEDICA 系统
      • Beam Me Up, Scotty: PURELAB® Option Q Delivers Essential Ultra Pure Water
      • Clean Water for a Clean Future
      • Critital Tests Benefit from PURELAB® Option Reliable Pure Water
      • DASA:巴西最大的医疗诊断公司
      • ELGA 帮助免疫血清学实验室最大程度地增加运行时间
      • Fondazione Telethon Continues to Choose ELGA Labwater as a Trusted Partner
      • 1+ 级超纯水对非专利药物开发的重要性
      • 城市综合医院为西门子 ADVIA® 分析仪选配 MEDICA® Pro
      • Optimale Wasserqualität für mikrobiologische Forschung und Lehre
      • PURELAB® Option R Guarantees Pure Water for Leading Microfluidics Technology
      • PURELAB® Pulse Delivers Reliable Water Quality and Quantity for a Wide Range of Applications
      • PURELAB® flex:适合当今研究方法的理想培训系统
      • Powering Cutting-Edge Gene Research
      • Sichere Reinstwasserversorgung für präzise Produkttests
      • Zentrale Reinstwasser-Aufbereitung für Analyser
      • ELGA LabWater and Beckman Coulter Join Forces
      • Applied New Technologies Department Improves ICP, IC & HPLC Sample Turnaround Times with PURELAB®
      • 借助超纯水,解开南极的秘密
      • Advancing Genetic Technologies
      • Cross Infection Control: Pure and Simple
      • Researching effective new ways to prevent cardiovascular disease at the University of Columbia
    • 超纯水
    • 白皮书
      • HPLC 水纯度
      • HPLC 的制药应用
      • 降低临床风险
      • 可持续发展
  • English
  • Deutsch
  • Español
  • Français
  • Italiano
  • Português
  • 日本語
  • 隐私政策
  • 条款和条件
  • 全球法律合规
  • 专利
  • 页面操作员
  • 首页
  • Node
  • HPLC Determination of Taste Components in Wine
Water In The Lab
Analytical Chemistry

HPLC Determination of Taste Components in Wine

1 3月 2020
- by Dr Paul Whitehead

Pouring wine for oxygen

The long-established wine production methods are the subject of on-going extensive scientific study to enhance performance, both in terms of yield but, particularly, to produce the wines that modern palettes prefer. HPLC was used in a recent study of the key taste components in wine.

Controlled water deficit is a common practice in global viticulture, particularly in the production of red wine in areas with warm climates. It involves supplying an amount of water that is less than the rate of evaporation/transpiration either throughout the growing season or at specific stages. Controlled water deficit reduces the size of the fruit, increases the skin/pulp ratio and can affect the accumulation of key phenolic compounds which affect color due to anthocyanins and the astringency, bitterness, aging capacity and color stabilization due to flavonols.

The optimum moment to harvest red wine is when the sugar/acidity ratio is correct (technological ripeness (TR)), the grapes have a high concentration of easily extractable phenolic compounds in the skin and the seeds have a hard outer coating. In warm climates, TR occurs before phenolic ripeness and Alejandro Caceres-Mella and colleagues have assessed the effect of three levels of water deficit on components of Cabernet Sauvignon wines harvested at different dates to see if the effects on wine characteristics.

Reverse-Phase HPLC Using Ultrapure Water From The PURELAB Range Used to Prepare Samples, Reagents, and Standards

The anthocyanins and low molecular-weight phenols were determined in the grape extracts by reverse-phase HPLC with a diode-array detector using ultrapure water from a PURELAB Ultra to prepare samples, reagents, and standards.

Results from these and other tests were compared with tests from a sensory panel. The high purity of the water used enabled greater sensitivity and accuracy in the analyses and allowed the determination of low levels of stilbenes in the extracts. 

The Results of HPLC Determination

The results suggest that, although total phenols and alcohol content were higher in wine from the late-harvested grapes, the chemical compositions and sensory tests were very similar at different dates. This is potentially useful as in warm climates late grape harvesting produces wine with higher alcohol content which, these days, is less acceptable to consumers. Water deficits were found to increase the chemical and sensory quality of the wine; a potentially useful attribute in a world of declining water supplies.

Treatments with the most restrictive irrigation and an earlier harvest showed higher amounts of stilbenes, which are reported to have significant health benefits with properties as anti-oxidants, anticancer, anti-inflammatory and anti-diabetic agents. 
 

Reference

Cuzmar P.D., Salgado E., Ribalta-Pizarro, C., Oleata J.A., Lopez E., Pastenes C. And Caceres-Mella A. (2018)Phenolic composition and sensory characteristics of Cabernet Sauvignon wines: effect of water stress and harvest date. International Journal of Food Science and Technology, 1-10

 

Dr Paul Whitehead 

After a BA in Chemistry at Oxford University, Paul focused his career on industrial applications of chemistry. He was awarded a PhD at Imperial College, London for developing a microwave-induced-plasma detector for gas chromatography. He spent the first half of his career managing the analytical support team at the Johnson Matthey Research/Technology Centre,specialising in the determination of precious metals and characterising applications such as car-exhaust catalysts and fuel cells. Subsequently, as Laboratory Manager in R&D for ELGA LabWater, he has been involved in introducing and developing the latest water purification technologies. He now acts as a consultant for ELGA.

Pure Water Essence of the Lab Whitepaper download

How well do you know your ultrapure lab water?

Do you know the most effective way to use ultrapure water, your most fundamental reagent? Read our full whitepaper and discover how you can make sure that your pure water supply delivers the performance you need to produce reliable and accurate results.

          Read the Whitepaper

 

 

  • Enquiry
  • 获取报价
  • 预订演示
  • 联系获认证的合作伙伴

Enquiry

Please check this to confirm that you have read our Terms of Service and Privacy Policy.

获取报价

Please check this to confirm that you have read our Terms of Service and Privacy Policy.

预订演示

Please check this to confirm that you have read our Terms of Service and Privacy Policy.

Call us

Can't find what you are looking for?

Support Number
+44 (0)20 3567 7300
United Kingdom Sales
+44 (0)1628 879 704
United States of America Sales
+1 877-315-3542
France Sales
+33 1 40 83 65 00
China Sales
+86 400-616-8882

 

Elga LabWater 总部

Lane End Business Park
Lane End, High Wycombe
HP14 3BY
United Kingdom
电话: +44 (0) 203 567 7300
传真:+44 (0) 203 567 7205

超纯水专家

  • 支持和服务
  • 活动

案例研究

  • 雅培诊断
  • DASA 医学诊断
  • NeoDIN 医学研究所
  • 北斯塔福德郡 NHS 信托大学医院
  • Olsberg 职业技术学院

资源

  • 了解超纯水
  • 白皮书
  • 水纯化技术
  • 实验室应用
  • 水中杂质

Blogs

  • Latest Blog
  • Water Purity - Different Types of Pure Water
  • What is Clinical Laboratory Reagent Water (CLSI)?
  • What is Total Organic Carbon (TOC)?
  • 语言
    • Deutsch
    • English
    • Español
    • Français
    • Italiano
    • Português
    • 日本語
    • 中文
  • Veolia 其他站点
    • Veolia
    • Veolia Fondation
    • Veolia Water Technologies

© VWS (UK) Ltd. 以 ELGA®LabWater 的名义经营业务。2021- 保留所有权利
ELGA 是 Veolia 旗下全球实验室用水品牌。

  • 隐私政策
  • 条款和条件
  • 全球法律合规
  • 专利
  • 页面操作员
Elga Veolia
TOP

© 2017 ELGA Veolia