Oils & Fats A GENERAL INTRODUCTION TO ANTIOXIDANTS. GRINDOX Antioxidants and GUARDIAN Rosemary Extract

Transcription

1 A GENERAL INTRODUCTION TO ANTIOXIDANTS GRINDOX Antioxidants and GUARDIAN Rosemary Extract

2 Contents Why is it a problem? What is lipid oxidation? Antioxidants types and functions Technical service Literature How can it be controlled?

3 Why is oxidation a problem? changes in colour, aroma and flavour influence on nutritional value can be a health risk Why is it a problem? What is lipid oxidation? How can it be controlled? Why use antioxidants?

4 What is lipid oxidation? Vicious circle: Polymers Free radicals Oxygen Initiators Peroxides Fat, oil Free radicals Aldehydes, ketones, acids, etc.

5 How can it be controlled? By having control of: temperature light oxygen metals time Optimum use of antioxidants Why is it a problem? What is lipid oxidation? How can it be controlled? Why use antioxidants?

6 Why use antioxidants? Antioxidants delay oxidation prolong shelf life Why use antioxidants?

7 What does an antioxidant do? OH L AH Antioxidant Lipid radical O LH Repaired lipid A Unreactive antioxidant radical Why use antioxidants?

8 Three types of antioxidant Antioxidants are generally divided into three types: Antioxidant types Traditional antioxidants Vitamin-based antioxidants Rosemary extract Antioxidants BHA, BHT, propyl gallate, TBHQ Ascorbyl palmitate, tocopherols Rosemary extract Regulatory status (generally) Restricted use in foods. Typically max ppm. TBHQ not permitted in the EU Generally permitted in many foods as GMP/q.s. Natural flavouring

9 Danisco sells blends Benefits of blends Components Antioxidant Chelator Carrier Benefits Delay lipid oxidation, prolong shelf life and ensure consistent quality Prevent metal ions from acting as initiators of oxidation processes Liquid product can be pumped in-line Uniform distribution of antioxidant Oil-soluble Water-dispersible Powder Ingredient One or more antioxidants Citric acid, citric acid ester Emulsifiers, vegetable oil, propylene glycol, maltodextrin

10 Danisco blends - product examples GRINDOX 204 GRINDOX % TBHQ, 10% citric acid 10% ascorbyl palmitate, 10% tocopherols Oils and fats, refined as well as crude Oils and fats Antioxidants types and function

11 GRINDOX 204 (20% TBHQ, 10% citric acid) inhibits hydroperoxide development in margarine Table margarine Hydroperoxide development at 5 C Peroxide value (meq/kg oil) Months Nothing added 1000 ppm GRINDOX 204

12 Rosemary extract Extract from the leaves of rosemary (Rosmarinus officinalis) Regulatory status: flavouring, not antioxidant Antioxidants types and function

13 GUARDIAN Rosemary Extract - product examples PRODUCT FORM AND SOLUBILITY COMPOSITION GUARDIAN Rosemary Extract 08 Liquid, oil-soluble Rosemary extract (5% phenolic diterpenes) + carrier GUARDIAN Rosemary Extract 09 Liquid, waterdispersible Rosemary extract (5% phenolic diterpenes) + carrier GUARDIAN Rosemary Extract 11 Powder Rosemary extract (5% phenolic diterpenes) + carrier Natural extract with antioxidant properties Standardised antioxidant activity Formulated carrier systems

14 GUARDIAN Rosemary Extract Life Extension (Rancimat 110 C) Lard versus Phenolic Diterpenes in Rosem ary Extract % Life Extension Phenolic Diterpenes (ppm )

15 Ideally an antioxidant should be easy to handle and use be permitted by local food regulations have no impact on the aroma, flavour or colour of the oil be effective in low concentrations Antioxidants types and function

16 Technical service Our technical service comprises: quality and stability tests application knowledge technical literature tailor-made customer solutions Technical service

17 Quality and stability tests In our laboratory we can perform quality and stability tests on all kinds of products, e.g. Rancimat Conductivity signal amplifier and 6-channel point recorder Oxidograph Transducer Oxipres Transducer Reaction vessel Flow meter Aluminium heating block Absorption vessel containing distilled water and double platinum foil electrodes Recorder Thermostatic heating block and magnetic stirrer Thermostatic heating block Recorder Glass jar with loose glass lid Stainless steel bomb (with lid and perpendicular tube)

18 Technical literature Lipid oxidation and GRINDOX Antioxidants: TM 16, 25, 26 Test methods for lipid oxidation: TM 24 GUARDIAN Rosemary Extract: TM 36 Oils and fats: TM 1513 Bakery products: TMs 36, 1033 Meat and poultry: TM 36 Potato flakes: TMs 1008, 1032 Table margarine: TM 1532 Technical service

19 Antioxidant staff in Brabrand, Denmark Product division Jørgen Sørensen, Product Manager Mie Svidt, Product Service Innovation Torben Isak, Senior Application Manager Areas: South America, Mexico, Asia Anne-Mette Frost, Application Manager Areas: Europe Back-up Innovation Inge Merethe Søe, Laboratory Technician Jette Svensson, Secretary Danisco A/S Edwin Rahrs Vej 38 DK-8220 Brabrand Tel: Fax: Technical service

20 Danisco sells GRINDOX Antioxidants GUARDIAN Rosemary Extract ANTIOXIDANT BLENDS FOR ALL KINDS OF APPLICATION