Home Profile Market Place Sweeteners Lab Methods Glossary Search
Master Index Environment Application Starch Statistics Tables Write us

International Starch Institute
Science Park Aarhus, Denmark
ISI 06 Table 3a  - Determination of Dry Matter in Dual Converted 42 DE High Maltose Syrup by Refractive Index

1. Scope The table is applicable to 42 DE dual converted high maltose syrup with 0.4% ash on dry matter.  LT 24 Nov. 1997
2. Principle The refractive index of sample is transformed to dry matter by a table.
3. Apparatus 3.1 Refractometer with thermostat
4. Procedure Adjust temperature of refractometer (3.1) to 20, 30, 45 or 60 oC. +/- 0.2 oC
Adjust sample temperature to that chosen for the refractometer.
Place a few drops of sample on fixed prism and close instrument Work fast
Read the refractive index (nD) to nearest 0.0002 unit. Clean prisms immediately after.
5. Calculation Find dry matter (DM) in percent of sample (average results of two samples with no decimal) by using table: Correct eventually for differing DE

DM%

20 oC

30 oC

45 oC

60 oC

0

1,33299

1,33194

1,32985

1,32725

2

1,33582

1,33475

1,33263

1,33000

4

1,33874

1,33764

1,33549

1,33284

6

1,34171

1,34058

1,33840

1,33572

8

1,34472

1,34356

1,34135

1,33865

10

1,34776

1,34658

1,34434

1,34162

12

1,35086

1,34965

1,34737

1,34463

14

1,35399

1,35276

1,35045

1,34769

16

1,35717

1,35591

1,35358

1,35079

18

1,36039

1,35911

1,35675

1,35394

20

1,36366

1,36236

1,35996

1,35714

22

1,36698

1,36565

1,36322

1,36038

24

1,37034

1,36898

1,36653

1,36367

26

1,37375

1,37237

1,36989

1,36701

28

1,37721

1,37580

1,37329

1,37039

30

1,38071

1,37928

1,37675

1,37383

32

1,38427

1,38281

1,38025

1,37732

34

1,38787

1,38640

1,38381

1,38086

36

1,39153

1,39003

1,38742

1,38445

38

1,39524

1,39371

1,39108

1,38809

40

1,39900

1,39745

1,39479

1,39179

42

1,40281

1,40124

1,39855

1,39554

44

1,40668

1,40508

1,40237

1,39935

46

1,41060

1,40898

1,40625

1,40321

48

1,41458

1,41294

1,41018

1,40713

50

1,41861

1,41695

1,41417

1,41110

52

1,42270

1,42102

1,41822

1,41514

54

1,42685

1,42515

1,42233

1,41923

56

1,43106

1,42934

1,42649

1,42339

58

1,43533

1,43359

1,43072

1,42761

60

1,43966

1,43790

1,43501

1,43189

62

1,44405

1,44227

1,43936

1,43623

64

1,44851

1,44670

1,44378

1,44064

66

1,45303

1,45120

1,44826

1,44511

68

1,45761

1,45577

1,45280

1,44965

70

1,46226

1,46040

1,45742

1,45426

72

1,46698

1,46510

1,46210

1,45893

74

1,47177

1,46986

1,46685

1,46368
6. Notes
7. Reference International Standard: ISO 1743

| Top of Page | Method ISI 06 | LabIndex |

Copyright© 1999. Read Disclaimer notice.
All rights reserved. International Starch Institute, Science Park Aarhus, Denmark.

Keywords: laboratory method determination dry matter substance starch glucose maltose fructose syrup refraction refractive index