Table 2.
Compar ison of flavanol and phenolic acid contents of nonfermented and fermented juices of Elaeagnus multiflora fruits

Physicochemical characteristics1) Thermal processing conditions
Control 80°C/30 min 100°C/30 min 120°C/30 min
NFJEM2) FJEM3) NFJEM Wine NFJEM FJEM NFJEM FJEM
Flavanol
Catechin 102.44±4.01b 68.77±3.43c 109.12±5.02b 72.57±3.27c 124.56±5.42ab 81.20±3.24bc 147.88±5.91a 99.45±3.56b
Catechin gallate 40.23±1.61a 32.11±1.44ab 38.52±1.63a 29.80 32.14±1.45ab 24.01±1.20b 28.12±1.40ab 20.11±1.14b
Epicatechin 203.11±9.98cd 154.22±7.71d 234.14±11.70b 176.33±8.01d 278.53±11.92ab 226.12±11.55b 311.35±15.56a 264.55±11.88ab
Epicatechin gallate 67.23±3.36a 37.20±1.67b 60.38±3.02a 30.24±1.51c 47.52±1.92ab 21.33±1.05d 40.27±1.61b 17.26±0.86d
Epigallocatechin 87.33±4.36b 42.57±1.92b 101.26±4.56b 55.41±2.77cd 113.89±5.69ab 69.87±3.49c 132.29±5.91a 82.19±4.11b
Epigallocatechin gallate 15.61±0.78a 8.55±0.42b 15.89±0.82a 8.76±0.44b 15.66±0.77a 8.98±0.40b 16.02±0.80a 8.81±0.39b
Total 500.34 334.87 543.42 364.35 596.64 422.53 659.91 483.56
Phenolic acids
Caffeic acid 2.57±0.12a 2.41±0.11ab 2.51±0.13a 2.36±0.10ab 2.18±0.10b 2.20±0.10b 1.97±0.08b 1.46±0.06c
t-Cinnamic acid 1.37±0.06a 0.83±0.04c 1.32±0.05a 0.82±0.03c 1.19±0.05ab 0.98±0.05b 1.01±0.06b 0.74±0.02c
p-Coumaric acid 8.11±0.41a 5.74±0.28b 7.89±0.39a 5.43±0.22b 7.56±0.35a 4.99±0.20b 7.16±0.37a 4.03±0.18b
Ferulic acid nd nd 0.12 nd 5.78±0.28a 2.32±0.12c 11.21±0.56a 5.02±0.25a
Gallic acid 7.89±0.39c 6.67±0.33de 8.06±0.40c 6.99±0.35d 8.58±0.43d 7.11±0.35c 9.87±0.49a 6.44±0.32e
p-hydroxylbenzoic acid 2.86±0.14d 3.41±0.17c 3.42±0.16c 4.21±0.21b 3.87±0.19bc 5.88±0.29a 5.66±0.24a 5.92±0.30a
Protocatechuic acid 13.66±0.68bc 12.03±0.60c 14.02±0.70b 12.57±0.63c 14.89±0.74b 13.21±0.66bc 18.43±0.92a 10.22±0.51d
Tannic acid 1.58±0.08a nd4) 0.53±0.03b nd nd nd nd nd
Salicylic acid 43.60±2.18d 16.77±0.83e 52.36±2.61c 22.44±1.12e 73.81±3.69b 43.06±2.15d 101.24±5.00a 60.53±3.02bc
Vanillic acid 9.77±0.48b 5.46±0.27d 11.24±0.56b 7.86±0.39c 13.02±0.65ab 9.87±0.49b 15.99±0.79a 10.11±0.50b
Total 81.64 51.86 90.23 54.82 117.86 79.75 156.55 94.36
All data are presented as the mean SD of triplicate determinations. Means with different lowercase letters (a, b, c, d, and e) indicate significant differences of fermentation times by Tukey s multiple range test (p<0.05).
)NFJEM, nonfermented juice of Elaeagnus multiflora, Elaeagnus multiflora juices were contained 0.5% (w/v) of (NH)4HPO4 and 24 °Brix of sugar.
FJEM, fermented juice of Elaeagnus multiflora, S. cerevisiase CS02 were innoculated into Elaeagnus multiflora juice containing 0.5% (w/v) of (NH)4HPO4 and 24 °Brix of sugar and there were fermented at 25°C for 9 days.
nd, not detected.