Jul 29, 2014 - Normalized on the Internal Standard (n=9, 18 or 27). Treatments. Ethanol. 2-Methyl-. 3-butenol. 3-Hexenol 1-Hexanol. Iso- eucalyptol.
John C. Beaulieu, Steven W. Lloyd, Jeanne M. Lea, Michael A. Watson, Maureen A. Tully, Rebecca E. Stein-Chisholm, Casey C. Grimm and Karen L. Bett-Garber
Food Processing & Sensory Quality, USDA-ARS, Southern Regional Research Center, New Orleans, Louisiana
ASHS-2014
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Scheme of Juice Processing and Sampling Clarified Juice & Concentrate 1
Whole fruit untreated or blanched
Purée & 100% Smoothie Whole, frozen, dehydrated, etc.
2
1
Juice Extraction (flesh, skin, portions, grind, press)
3
Native Enzyme Inactivation
Native Enzyme Inactivation
(pectinase, cellulase, lipase etc.)
(pectinase, cellulase, lipase etc.)
Clarification 4
5
(non-native enzymes cellulase, bentonite; PVPP etc.)
7
Flash Pasteurization
Ultrafiltration
Concentration
(final clarification)
Evaporation Reconstitution
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Bottling Storage
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6 9
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25°C, 2 Months 25°C, 1 Month Pasteurized 4°C, 3 Months
L*
4°C, 2 Months 4°C, 1 Month Pasteurized Ultrafiltered GN Press (n=6 or 9)
14.0
15.0
16.0
17.0
18.0
19.0 14
25°C, 2 Months 25°C, 1 Month
Pasteurized 4°C, 3 Months
a*
4°C, 2 Months 4°C, 1 Month Pasteurized Ultrafiltered GN Press (n=6 or 9)
2.50
2.75
3.00
3.25
3.50
3.75
4.00
4.25 15
25°C, 2 Months 25°C, 1 Month Pasteurized 4°C, 3 Months
b*
4°C, 2 Months 4°C, 1 Month Pasteurized Ultrafiltered GN Press (n=6 or 9)
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8 16
4 °C
25 °C
18.0 (n=9)
°Brix
17.8 17.6
17.4 17.2 17.0 0
1 Months Storage
2 17
4 °C
25 °C
21.0 °Brix to Acid Ratio
(n=9)
20.0 19.0
18.0 17.0 0
1 Months Storage
2 18
Organic Acids (mg/kg)
4 °C Citric
25 °C Citric
Total 4 °C
Total 25 °C
25,000 (n=9)
23,000
21,000 19,000 17,000 0
1 Months Storage
2 19
Anthocyanidins (mg/ml)
Pasteurization
1 Month
2 Months
(n=9)
0.080 0.070 0.060 0.050 0.040 0.030 0.020 0.010 0.000
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Averaged Relative Percentage Target Ion Response Normalized on the Internal Standard (n=9, 18 or 27) Treatments
Ethanol
2-MethylIso3-Hexenol 1-Hexanol p-Cymene 3-butenol eucalyptol
GN Press
(18)
19.4
12.8
306.1
424.9
1.4
25.9
Pasteurized
(27)
27.1
16.5
376.4
558.6
0.8
107.0
4 °C, 1 Month
(9)
9.4
5.4
81.8
127.2
0.2
6.5
4 °C, 2 Months
(9)
11.1
2.8
66.4
98.1
0.1
8.0
25 °C, 1 Month
(9)
19.7
13.1
64.2
83.0
0.3
2.4
25 °C, 2 Months
(9)
30.8
7.7
45.6
37.9
0.2
3.2
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Averaged Relative Percentage Target Ion Response Normalized on the Internal Standard (n=9, 18 or 27) Treatments
Limonene
γ2Linalool Terpinene Nonanone
α2,4-DiTerpineol butylphenol
GN Press
(18)
31.8
7.5
11.9
3.7
55.8
n.d.
Pasteurized
(27)
406.8
63.8
6.6
4.9
60.3
5.7
4 °C, 1 Month
(9)
0.9
1.3
0.8
1.4
15.0
40.1
4 °C, 2 Months
(9)
2.6
1.8
1.0
1.2
14.6
53.4
25 °C, 1 Month
(9)
0.7
0.9
0.6
1.7
12.8
50.8
25 °C, 2 Months
(9)
1.5
1.1
0.7
1.4
9.4
51.7
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?? Any Juicy Questions ??
