From:  Development of a healthy cookie using lemon peel powder

 Vitamin C and total phenolic content of cookies.

SampleVitamin C
(mg 1,000 g–1)
TPC1
(mg 100 g–1)
TPC2
(mg 100 g–1)
TPCT
(mg 100 g–1)
ControlNDL26.29 ± 4.09c235.49 ± 9.69a261.78 ± 12.63b
LPP-210.06 ± 1.80d60.25 ± 1.58bc228.47 ± 10.00ab288.72 ± 10.55b
LPP-414.26 ± 1.53c70.42 ± 3.25b233.67 ± 14.06a304.09 ± 14.39ab
LPP-620.70 ± 1.32b125.91 ± 24.33a220.78 ± 11.76ab346.69 ± 14.58a
LPP-826.55 ± 3.48a117.02 ± 36.87a227.72 ± 16.05ab344.74 ± 49.78a
LPP-1026.01 ± 1.93a134.84 ± 25.55a205.59 ± 12.63b340.43 ± 16.15a

Different letters in the column indicate a significant difference (p < 0.05). TPC1: total phenolic content of extract 1; TPC2: total phenolic content of extract 2; TPCT: sum of extracts 1 and 2. LPP: lemon peel powder; LPP-2: 2%; LPP-4: 4%; LPP-6: 6%; LPP-8: 8%; LPP-10: 10%; NDL: not detectable level.