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How to make a great fibre based drink using fruit pomace?
- 1. How to make a great fibre based drink using fruit pomace Dr. Shahidul Islam
- 2. Overview ๏จ What we like to achieve ๏จ Benefits and claims ๏จ Blackcurrant pomace and fractions ๏จ Why pomace canโt be used in drinks ๏จ Particle size and type of mixtures ๏จ How to disperse particles in solution ๏จ The โFineโ fibre process flow diagram
- 3. What we like to achieve? ๏จ A drink enriched with fibre ๏จ Claim for โsource of fibreโ : 3g/100g (EFSA) http://ec.europa.eu/food/food/labellingnutrition/claims/community_register/nutrition_claims_en.htm
- 4. Benefits and claims ๏จ Combats constipation ๏จ Health related claims ๏ค Reduction of obesity ๏ค Reduction of diabetics ๏ค Protect against heart disease ๏ค Reduce excess blood fats
- 5. โข Total Blackcurrants production โ 613,000 tons (season 2000) Pomace โ 11% Blackcurrant Pomace โข Economic value: Significant
- 6. Industrial blackcurrant pomace fractions Ref: Sojka and Krol, Composition of industrial seedless black currant pomace, Eur Food Res Technol (2009) 228 Fraction Mass proportion of particular fractions (%) Season 2006 Season 2007 Seedless fraction 42.9 37.9 < 0.8 mm (*F 0.8) 6.1 4.8 2โ5 mm (F 2โ5) 23.2 25.1 > 5 mm (F 5) 13.7 7.9 Seed fraction (0.8โ2.0 mm) 57.1 62.1 Seeds 53.4 57.3 Seedless particles 3.6 4.8 *F = Particle diameter
- 7. Nutrient components in dry pomace Fraction (mm) Dry substance (%) Protein (%) Total Dietary Fibre (%) 2006 season F 0.8 95.7 11.8 67.1 F 2โ5 94.0 12.0 67.6 F 5 97.1 12.6 64.6 2007 season F 0.8 96.8 12.1 63.3 F 2โ5 96.3 12.1 65.2 F 5 96.3 12.3 64.4
- 8. Dietary fibre fractions in BC pomace Proportion of dietary fibre (DF) in blackcurrant pomace Source: Nawirska, 2005. Dietary fibre fractions from fruit and vegetable processing waste. Food Chemistry. V91 2.73 12 25.3 59.3 Pectins Cellolose Hemicellolose Lignin ๏ฑOthers โ 0.67% Cellulose
- 9. Why pomace canโt be used in drinks? ๏จ Mostly large fibre with skins, strings, stalks and other foreign matters (wood, leaf, etc. ) ๏จ Difficult to make a suspended solution ๏จ Easy to separate and sediment ๏จ If we use the hydrocolloid (pectin, xanthan gum, etc.) then drink may become too thick ๏จ Impact on sensory specially mouth feel
- 10. Particle sizes and Mixtures Example: Orange cloud particles: 0.4 โ 5 micron (below 2 micron is stable) Mixtures Particle sizes Non-homogeneous Mixtures (suspension) Colloidal suspension Homogeneous mixture/True Solution (1-100nm) Example Sand in water Liquid medicine Milk Juice โ cloudy Emulsion Sugar solution Clarified juice
- 11. Drink (with fibre) - a complex mixture Water Fibre (cellulose, hemicellulose, lignin, pectin), & protein Minerals and sugar, water soluble colour (true solution)
- 12. So whatโs the ideaโฆ โข To disperse and stabilise fruit particles in a liquid โข Stokes' Law Where, V = velocity of fall (cm sec-ยน), g = acceleration of gravity (cm sec-ยฒ), r = "equivalent" radius of particle (cm), dl = density of particle (g cm -ยณ), d2 = density of medium (g cm-ยณ), and ยต = viscosity of medium (dyne sec cm-ยฒ). V = (2grยฒ)(d1-d2)/9ยต Creeping flow/ Stokes flow Fd = Drag force Fg = Gravity
- 13. How to achieve the goal? โข Reduce particle size below 50 micron or even1 micron โข Use physical energy โ share, grinding, ultrasonic, etc. โข Produce colloidal and or true solution โข Modelling of acceptable level of stabilisers Colloidal system
- 14. Pasteurisation and storage Fine slurry Centrifugation Filtration (micron) Colloid Milling (2nd- if needed) Colloid Milling (1st stage) Slurry making (addition of water) Sieving (5mm) Seedless Pomace Separation (centrifuge) Drying Pomace Fine fibre โ process flow diagram
- 15. Thank you!
Editor's Notes
- Hello everyone, Now I am going to talk aboutโฆ Basically I got this idea from project hope..that use fruit waste as fibreโฆ
- First of all I would like to talk about what we like to achieve, then
- Dried pomace Fraction of the pomace of 2โ5 mm is characterized by the greatest content of phytocompounds, of which anthocyanins constitute about 90% of the polyphenols determined.
- It has nutrients such as protein, fat (2.5-4%), ash (2.5-4%), dietary fibre, carbohydrates (8.5-15%) etc.
- Blackcurrant fibers are mainly pectin, celluloses, hemicelluloses, etc (wax). which are very beneficial edible fibers.
- The mixture is also called a colloidal solution, colloidal system, or colloidal dispersion. A colloidal system is not a true solution but it is not a suspension either because it does not settle out like a suspension will over time. Colloids are larger than most inorganic molecules and remain suspended indefinitely. They are large molecules, such as proteins, or groups of molecules. They have many properties, depending on their large specific surface. Colloid formation can be classified in two systems, namely reversible and irreversible. In an irreversible system, the products are so stable or removed so well that the original reactants cannot be reproduced. A reversible system is one in which the products can be made to react to reproduce the original reactants.
- Colloidal solution - A system intermediate between a true solution and a suspension. A dispersion where the particle size is between 1 and 100 nm. Orange: 0.4 โ 5 micron below 2 micron are stable
- Fruit particles are skins, protein, minerals, colour, etc.
- According to Stokes law a particle in a fluid stay in a floating condition when drug force and gravity force (creeping flow) is equal.