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AGRICULTURE
AND THE ENVIRONMENT
Heavy
metal content of some nutritional products used in agriculture.
COMPARISON
BETWEEN PRODUCTS BASED ON DERIVATIVES OF HYDROLIZED OR FERMENTED PROTEIN
AND PRODUCTS BASED ON L-AMINO ACIDS AND BIOLOGICALLY ACTIVE OLIGOPEPTIDES
OBTAINED VIA CELL PATHWAY SYNTHESIS (INAGROSA´S PRODUCTS).
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Maximum
admissible content of heavy metals. Spanish official regulations
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EU regulations
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INAGROSA´S
Products.
Analysis
carried out by:
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Products
based on derivatives from hydrolysed or fermented protein.
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Heavy
metals
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O.M.
19-6-91
ppm
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O.M.
28-5-98
ppm
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ppm
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Laboratory
of the Ministry of Agriculture (1)
mg/Kg d.m.
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Certified
Private Laboratory (2)
mg/Kg d.m.
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Average
in samples of four products on the market
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Max.
content found in samples
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Min.
content found in samples
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mg/Kg
d.m.
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mg/Kg
d.m.
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mg/Kg
d.m.
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Aminol-Forte
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Humiforte
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Aminol-Forte
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Humiforte
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mg/Kg
d.m.
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mg/Kg
d.m.
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mg/Kg
d.m.
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Cadmium (Cd)
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30
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3
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1
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< 0.008
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< 0.008
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< 0.0010
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0.0660
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185
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280
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25
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Copper (Cu)
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1,500
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450
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350
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0.140
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0.100
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0.1606
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0.1386
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2,700
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3,250
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2,500
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Nickel (Ni)
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350
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120
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40
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0.201
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0.065
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<
0.0100
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0.2498
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650
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910
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506
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Lead (Pb)
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1,000
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150
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5
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0.141
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0.202
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< 0.0500
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< 0.0500
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1,300
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2,575
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860
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Zinc (Zn)
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3,000
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1,100
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500
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0.160
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0.340
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0.1065
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0.3111
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4,500
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4,900
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3,900
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Mercury (Hg)
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20
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5
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1
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< 0.002
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<0.002
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< 0.1000
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< 0.1000
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15
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27
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10
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Chromium (Cr)
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750
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270
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45
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<0.040
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0.417
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0.0175
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0.1153
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1,425
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1,560
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1,360
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Selenium (Se)
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-
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-
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0.5
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-
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-
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< 0.1000
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< 0.1000
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30
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35
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25
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Total
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6,650
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2,098
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942.5
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0.692
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0.757
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0.5456
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1.1306
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10,805
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13,537
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9,186
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(1)
Spectrophotometry (2)
Spectrophotometry ICP
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