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. 2022 Jun;60(2):266–278. doi: 10.17113/ftb.60.02.22.7419

Table 1. Total soluble solids (TSS), proteins, browning index, pH and hydroxymethylfurfural (HMF) of carob, maple and date syrups.

Carob accession w(TSS)/(g/100 g) w(protein)/(g/100 g) Browning index pH w(HMF)/
(mg/kg)
Akkar (75.3±0.8)b (2.7±0.0)h (73.1±3.1)ef (4.9±0.0)jkl (1712.1±0.3)gh
Selaata (79.8±0.3)hi (2.50±0.01)g (68.3±1.1)de (4.93±0.02)kl (13515±426fg
Wadi El Hojeir (77.0±2.6)cd (1.83±0.02)e (87.8±0.2)g (4.72±0.01)h (1813±186)h
Batroun (78.3±0.5)efg (1.91±0.02)e (45.8±2.1)c (4.97±0.01)kl (881±94)cdef
Maaroub (78.7±0.4)fgh (1.85±0.03)e (31.3±1.0)b (4.93±0.08)kl (610±242)bc
Bourjin (78.5±0.3)fg (1.75±0.01)f (88.9±1.8)g (4.83±0.02)ij (1778±265)gh
Marjayoun (76.9±0.1)cd (1.77±0.00)e (49.0±1.1)c (5.17±0.04)m (779±6)bcd
AUB1 (77.6±0.1)def (2.14±0.01)f (49.1±1.4)c (4.68±0.01)gh (1271±303)ef
AUB2 (78.40±0.30)fg (4.40±0.06)k (85.5±10.5)fg (4.88±0.02)jk (1046±27)cdef
AUB3 (80.18±0.08)i (1.81±0.02)e (56.7±8.7)cd (4.90±0.13)jkl (814±117)bcde
AUB4 (79.43±0.06)ghi (3.2±0.3)j (57.9±1.2)g (4.45±0.01)d (519±210)h
AUB6 (80.3±0.2)i (2.39±0.06)g (49.8±2.1)c (4.75±0.05)hi (874±50)bcde
AUB7 (76.3±0.3)bc (2.94±0.07)i (52.4±4.0)c (4.56±0.00)ef (1103±352)def
AUB8 (78.8±0.2)gh (0.98±0.02)b (32.4±3.3)b (5.0±0.1)l (711±91)bcd
AUB9 (78.5±0.4)fg (4.82±0.01)l (86.9±12.1)cd (4.37±0.01)c (2169±514)b
AUB10 (78.9±0.1)gh (1.35±0.02)c (88.1±0.6)g (4.62±0.04)fg (1784±172)gh
AUB11 (78.8±0.2)gh (2.5±0.1)g (32.1±6.9)b (4.73±0.02)h (1121±302)def
AUB12 (80.3±0.3)i (2.22±0.01)f (109.9±16.6)h (4.25±0.00)b (4049±182)i
AUB14 (77.25±0.05)cde (2.97±0.02)i (127.3±5.4)i (4.49±0.01)de (1810±250)h
Date syrup (75.50±0.00)b (1.55±0.07)d (98.0±23.4)gh (4.01±0.03)a (1987±283)h
Amber maple syrup (66.6±0.1)a (0.08±0.01)a (3.9±0.2)a (6.00±0.06)n (66.2±3.0)a
Dark maple syrup (66.9±0.1)a (0.16±0.00)a (4.1±0.2)a (6.60±0.06)o (72.5±2.2)a
Range of carob syrups 75.3−80.3 1.0−4.8 31.3−127.3 4.3−5.2 520−4049
Mean±S.D. of carob syrups 78.4±1.4 2.5±0.9 67.2±27.2 4.7±0.2 1379±809

All mass fractions were determined on dry mass basis. AUB1 to AUB14=American University of Beirut. Values with different letters in superscript in the same column are significantly different (p<0.05) according to Duncan’s multiple range test