Particle Technologies for Food & Beverage Applications
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1 Particle Technologies for Food & Beverage Applications Ian Treviranus
2 What we ll talk about Featured technologies Importance to industry Application examples Q&A
3 Your interests What s available Industry requirements/trends Data interpretation (webinars TR008, TR010, TR015) Pastes Food Safety Modernization Act Particle shape
4 Featured technologies LA-950 / LA-300 Laser Diffraction SZ-100 Dynamic Light Scattering & Zeta Potential CAMSIZER & CAMSIZER XT Dynamic Image Analysis PSA300 Static Image Analysis SA-9600 Flowing Gas BET Surface Area LAQUA Electrochemistry Meters
5 LA-950: Laser Diffraction Particle size performance leader Ninth generation Ultra durable Lowest total cost of ownership Suspension, emulsion, powder, paste, gel 10 nanometer 3 mm
6 CAMSIZER: Image Analysis High resolution size & shape Patented dual capture Powders and suspensions Classic: 30 micron 30 millimeter XT: 1 micron 3 millimeter
7 Why Do We Care? Particle size affects Mouthfeel Solubility Flavor intensity Powder flow Particle size monitors Milling / grinding Mixing Eating is emotional
8 Why Care About Shape? Mixing time Shape affects mobility and causes segregation Smaller influence than size distribution Powder flow Shape affects many aspects of powder processing
9 Why Do We Care Part 3 Food Safety Modernization Act Passed in 2010 Shift from reactive to proactive How does particle characterization relate to food safety? Greater emphasis on analytical testing means more money allocated, means opinions changing on what is and is not necessary
10 Mayonnaise Ingredients: oil, egg yolks, salt, vinegar or lemon juice Slowly add oil to egg yolk while adding energy (whisk, blender, mixer) Energy helps disperse oil into water from yolks (oil in water emulsion) Yolks contain lecithin, which stabilizes the emulsion
11 Emulsion Stability Want stable emulsion Without stabilizers, most emulsion eventually phase separate Mechanisms: creaming, coalescence, Ostwald ripening
12 Emulsion Stability Steric stabilization: coat surface with polymers Particles can t touch so they don t interact Electrostatic stabilization: alter surface chemistry to put charge on particle surface Repel like magnets
13 Steric Stabilization Multi-Layered Emulsions* *Weiss, J., Takhistove, P., McClements, D.,Functional Materials in Food Nanotechnology, Journal of Food Science, Vol. 71, Nr. 9, 2006
14 Zeta Potential If surface has + charge, then - ions attracted to surface + ions attracted to ions, builds electric double layer Slipping plane: distance from particle surface where ions move with particle ZP = potential (mv) at slipping plane
15 Milk Homogenization
16 Milk Homogenization
17 Milk Homogenization LA-300 Casein micelle
18 Flavor Emulsions Many soft drinks use oils to add flavor Pure oil would not mix w/water Use flavor emulsions If not formulated properly, oil phases separates to surface, leaves ring
19 Effect of Concentration High enough for good S/N ratio Low enough to avoid multiple scattering Typically %T Measure at different T%, look at Chi Square calculation d50 Chi 2
20 LA-950 Method Expert Unique guided method development Optimize parameters Choose the best refractive index Create one button SOPs
21 Wheat Flour Overlay of 3 Consecutive Measurements: Wheat Starch, Purified - Sigma Aldrich
22 Flour, Wet and Dry Why measure dry? Natural state Less expensive Dispersion problem
23 LA-950 Quick Wet/Dry Change
24 Coffee Beans
25 Superior Dry Powder Feeder Direct flow of powder down to cell rather than turn 90 o, then around plastic tube, no density restriction like horizontal units, zero impact surfaces means good dispersion w/o comminution Webinar TE016: Optimizing Dry Powder Measurements
26 Coffee Grinding Reproducibility Grounds up to 3 mm q(%) Diameter(µm) Nine measurements from nine unique samplings of three different ground coffee products. Notice the product with coarsest particles greater than 2000 microns.
27 Instant Coffee Figure 6: One measurement each of three different instant coffee products (Resolution). Figure 8: Correlation to historic sieve results (black marks) (Accuracy). Figure 7: Three different measurements of a single instant coffee product (Precision). Figure 9: Shape comparison (SPHT) of two different instant coffee products.
28 Sugar Q3 [%] q3 [%/µm] R6_bz_60mm_xc_min_001.rdf R10_bz_60mm_TP_xc_min_006.rdf RT1227_R10_Retsch.ref RT1227_R6_Retsch.ref xc_min [µm] 0 shape of a sugar crystal compared to the square sieve opening affects which mesh size it passes through. Two sugar products of different size (red and green) with the CAMSIZER sieve-matching applied (sieve results as black asterisks). Notice the near perfect match.
29 Sugar Q3 [%] 90 KW2_bz_75mm_xc_min_005.rdf R10_bz_60mm_TP_xc_min_006.rdf KW7_bz_60mm_xc_min_001.rdf R4_bz_60mm_TP_xc_min_005.rdf xc_min [µm] Sugar is produced in different sizes, from 100 um (fine refined sugar) to 20 mm (rock sugar). The CAMSIZER can quickly measure this whole range.
30 Flavor Powders
31 Chocolate
32 Chocolate
33 Chocolate Imagine my surprise when I found this while visiting San Francisco
34 Pastes and Creams LA-950 Paste Cell uniquely measures pastes, creams, gels which cannot easily be diluted without changing nature Use small amount of sample, spread thin between two plates
35 Finally Pinto Bean Paste
36 Electrochemistry Meters HORIBA founded on ph measurement Expanded to include ph Conductivity Na + K + Ca 2+ NO 3 - Salt Technology in three form factors Laboratory Handheld Pocket
37 See you at 2014 IFT events Florida suppliers night February 27 Annual Meeting in New Orleans at booth 201 Particle size and electrochemistry lines will be attending
38 ありがとうございました اش ك ر Tacka dig ขอบค ณคร บ Gracias Σας ευχαριστούμε धन यव द 감사합니다 Danke Большое спасибо 谢谢 Grazie நன ற Obrigado
39 Ian Treviranus Product Line Manager Talk to us, ask questions Receive news of updates View application & technical notes (170+), webinars (70+), white papers.
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