Pulsar Food and Beverage Applications Brochure June 2013

8/12/2019 Pulsar Food and Beverage Applications Brochure June 2013

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Delivering benchtop NMR to the foodand beverage industry

Pulsar


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Alcohol determination

The measurement of alcohol content in drinks is

a commonly required analysis, needed:

for label claim purposes,

for process control,

for customs and excise reasons.

The analysis is also an excellent introduction to

instrumental techniques for undergraduates on

university and college courses.

Pulsar is both accurate and fast, and is

quantitative over a wide range of concentrations.

It also has the benefit of providing positive

identification of ethanol, as well as the ability to

reveal and identify other substances that may be

present (and undesirable), such as methanol.

Benchtop NMR Spectroscopy is:

More precise than refractometry,

distillation, and ebulliometry

Faster and less

complex than gas

chromatography

Alcohol determination: Fast and easy analysis

Figure 2Spectra of rum sample (blue) and 2 of the calibration standards.

Figure 1Calibration line for ethanol in water standards.

Pulsar

Pulsar

Rum

Figure 1 shows a typical calibration for ethanol. The blue diamonds represent a series of ethanol

in water standards, prepared gravimetrically; the red diamonds represent a series of commercially

available alcoholic drinks with data based on label claim. Figure 2 shows a sample of rum with a

label claim of 20%, together with 2 gravimetrically prepared standards, one at a higher ethanol

concentration (24.1% by volume), and one at a lower concentration (12.3% by volume).


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Edible Oil analysis

Edible oils are triglycerides extracted from plants, seeds,

nuts, and animal products.

Triglycerides contain 3 fatty acid chains, which control oil

properties and characteristics such as

avour

taste

health benets

shelf stability

resistance to oxidation and rancidity

value

Pulsar is a fast, accurate, and straightforward tool to analyse

the fatty acids in an oil.

For example, the presence of some fatty acids, such as

oleic acid (prevalent in olive oil) and linoleic acid (found in

sunflower oil) increase the value of an oil, whilst others, such

as linolenic acid, decrease value.

With the value of oils varying greatly, adulteration of high-

value oils with lower value substitutes is a significant problem.

Pulsar can be used to protect the integrity of brands by

detecting such adulteration.

In figure 4, Principal Components Analysis (PCA)* is

used to classify pure oils using their NMR spectra.

If a low value oil, such as corn oil, is used to

wholly or partially replace a high value oil,

the adulteration will be apparent.

* PCA is not part of the standard

Pulsar software package.

Edible Oil analysis: Maximise commercial valueand ensure no inferior substitution

Pulsar

Figure 3Spectra of 4 different edible oils : Olive (red), Walnut (cyan),

Sunflower (green) and Rapeseed (canola, purple).

Seed Oil Olefinic(1H per triglyceride)

Bis-allyllic (1H pertriglyceride)

Rapeseed (canola) 8.4 0.1 1.4 0.1

Sunflower 9.9 0.1 2.6 0.1

Olive 6.08 0.05 0.29 0.04

Walnut 11.5 0.3 5.0 0.2

Figure 4Principal Components Analysis of 10 different oils : Rapeseed

(canola, blue), Sunflower (black) , Olive (green), Corn (maize, red),

Peanut (ground nut,purple), Rice bran (orange), Walnut (magenta) ,

Linseed (brown) ,Coconut (cyan).


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Analysis of fat in dairy

products

Milk products contain widely varying amounts of

fat, from less than 0.5% for skimmed milk to 20%

or more for cream.

The level of fat may be measured for several

reasons:

regulatory compliance - EU regulations

define the allowable fat levels for different

milk types

process control - fat levels are important

in the control of processes using milk

label claims

The fats in milk exhibit an NMR resonance peak

(just below 1 ppm) which is easily identifiable and

very well separated from the dominant water peak..

The area of this peak can be used to quantify the

fat content in the various milks. A series of NMR

spectra of milk products ranging from skimmed up

to cream are shown in Figure 5, and the fat region

expanded in Figure 6.

Dairy product analysis: NMR for determination of fat content

Pulsar

Figure 5 Skimmed, semi-skimmed,

whole milks and cream.

Spectra of different structural isomers.

Figure 6 Expanded region showing the measurement of the fat content of

skimmed (purple), semi-skimmed (cyan), whole milks (green) and cream (red).

The example spectra

shown demonstrate

the versatility and

capabilities of Pulsar

for the food and

beverage industry.

water

fat

cream

skimmed milk semi-skimmed milk

whole milk


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Nuclear Magnetic Resonance (NMR) spectroscopy

gives unique molecular structural information

not achievable with other analytical techniques.

NMR is an advanced instrumental technique

providing valuable analytical results. However, to

get the best results from NMR has required expert

knowledge and a special operational environment

for the instrumentation. The requirement for

expensive consumable materials such as liquid

helium have added cost and complexity to its daily

use. Until now.

Pulsar enables quick and easy analysis with minimal

training, saving you both time and money.

Pulsar ... A breakthrough in benchtop NMR giving you reliable resultsfaster, more easily and at much lower cost.

Pulsar

Cost saving

Low maintenance and cost of ownership over the

instrument lifetime

Cryogen-free, no need for expensive liquid helium

No special laboratory requirements for the instrument

Time saving

Fast instrument setup using automated routines

Fast measurement times from seconds to a couple of

minutes

Immediate measurement of samples as instrument can

be located close to the experiment

Faster results in real time

Confidence in results

High resolution generating excellent quality spectra

Automated routines for optimisation of instrument

performance

The confidence of partnering with Oxford Instruments,

a globally respected and successful scientific instrument

brand

Ease of Use

Uses standard 5mm NMR sample tubes

Simplified Workflow approach to setting up the analysis

No NMR specialist operator required. Can be operated

easily with minimal training.

Pulsar - benchtop NMR for food and beverage analysis:


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Providing a wide range of service giving total peace of mind

visit www.oxford-instruments.comfor more information

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right to alter, without notice, the specification, design or conditions of supply of any product or service. Oxford Instruments acknowledges

all trademarks and registrations. Oxford Instruments plc, 2013. All rights reserved. Ref.FB-AN-06-13

www.oxford-instruments.com

Oxford Instruments Worldwide

Support and Service

We take great pride in working in close

partnership with our customers. Our goal

is to provide comprehensive technical support

throughout the products life.

When choosing to work with Oxford Instruments

you are safe in the knowledge that you have

the backup and support of our skilled product

champions and dedicated support engineers

throughout the complete lifetime of your instrument.

We offer a range of support packages that provide

you with the level of service you require.

Our goal is to provide our customers with faultless

service and swift expert maintenance on our

products to ensure they perform to their

highest capabilities.

Also available from

Industrial Analysis:

High performance benchtop MQC analysers for

specific applications in the food industry.

MQC

Oxford Instruments

Industrial Analysis

For more informationplease email: [email protected]

UK

Tubney Woods, Abingdon,Oxfordshire, OX13 5QX, UK

Tel: +44 1865 393 200

China

Room 1/E, Building 1,

Xiangzhang Garden,

No. 248 Donglan Road,

Shanghai 201102, China

Tel: +86 21 6073 2925

India

11, Marwahs Complex,

Andheri East,

Mumbai, 400072, India

Tel.: +91 22 4253 5100

Japan

Haseman Building,

2-11-6, Tomioka,

Koto-ku,

Tokyo, 135-0047, Japan

Tel: +81 3 5245 3251

Singapore

10 Ubi Crescent 04-81,

Ubi Techpark, Lobby E,

Singapore, 408564, Singapore

Tel: +65 6337 6848

USA

300 Baker Avenue, Suite 150,

Concord, Mass 01742, USA

Tel: +1 978 369 9933

Pulsar Food and Beverage Applications Brochure June 2013

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