Post on 12-Apr-2017
transcript
What is Acrylamide?
Wastewater TreatmentProcessing
Crude Oil Processing Food & Coffee
(Cooked Carbohydrates)
Cigarrete Smoke Paper Production
A WHO Group 2A carcinogen and toxic chemical found in:
In 2002, researchers discovered that acrylamide is a
by-product of heating asparagine, an amino acid naturally found in coffee and
carbohydrate-rich food, including bread, toast, potato
chips, fries, crackers, breakfast cereals, baby food, and breaded meat products.
Once inside the body, acrylamide is converted to glycidamide, a
compound that is more carcinogenic than acrylamide.
Why is Acrylamide in Food?
Acrylamide Threatens Health
Damages DNA and neural and reproductive systems. DNA damage is the main driver of
tumor formation (cancer).
Is associated with risk of developing kidney,
ovarian, and endometrial cancers in
32 scientific publications covering
56K patients.
Reduces baby birth weight and head
circumference, which are key negative
indicators of future health and development
How Much Acrylamide in Food?
Drinking Water
Cosmetics Carbohydrate-rich Food* US Environmental Protection Agency ** European Union
Computer vision based analysis of potato chips. A tool for rapid detection of acrylamide level.
An Approach to Detect
Computer VisionPowerful Rapid Non-contact
Analytical MethodsLaborious Costly Can’t adopt
easily
Surface color correlates withAcrylamide level
It was experimentally observed that the yellowish brown colored potato chips had the highest level of acrylamide.
BRIGHT YELLOWYELLOWIS
H BROWN
DARK BROWN
2 mm
150oC
• 3, 5, 8, 10, 15
170oC
• 3, 5, 8
190oC
• 1, 3
Images were captured with a color digital camera (Hewlett Packard model R507) at its maximum resolution (204861536 pixels).
Saved as JPEGWithout compression
Training Potato Chips
Image Acquisition
Bright Yellow(Region I)
0.820
0.715
0.280
Yellowish Brown(Region II)
0.755
0.465
0.006
Dark Brown(Region III)
0.360
0.130
0.088
Processing Technique
PIXEL SET III
PIXEL SET II
PIXEL SET I
Testing Image
Semi Automatic Segmentation
Vector Quantization
Segmented Image
Mean Representativ
e values
New Image
Vector Quantization
im_seq = imread(‘image_of_interest’);
im_seq = im2double(im_seq);
u=[0.820 0.715 0.280; // bright yellow 0.755 0.465 0.006; // yellowish brown 0.360 0.130 0.088; // dark brown 0.95 0.95 0.95];
Apply median Filter [3 3]
seg_im = VectorQuantize(im_seq,u);
Results and Discussion
Results and Discussion
Results and Discussion
We thank Scientific and Technological Research Council of Turkey (Project no. TOVAG COST 927–2) and Turkish Academy of Sciences (TUBA-GEBIP Study Grant) for financial support, and Ankara Test and Analysis Laboratory for LC-MS analyses.Research ArticleComputer vision based analysis of potato chips – A tool for rapid detection of acrylamide level1.Vural Gökmen, 2.Hamide Z. Senyuva2,3.Berkan Dülek3 and4.Enis Çetin3
Article first published online: 17 AUG 2006DOI: 10.1002/mnfr.200500257