Table 4 The effect of two brassinosteroids – castasterone (CS) and homocastasterone (HCS) – independently and mixed (x_CS – molar fractions of castasterone in the mixed solution) – on the limiting area per molecule (A_lim [Å₂]), collapse pressure (π_coll [mN/m]) and maximal compression module (C_s⁻¹_max [mN/m]) of the monolayers that had been prepared from the mixture of phosphocholines PC 18:3 + PC 16:0 (1:1) at 20 °C, 10 °C and 30 °C. Mean values (± SD) marked with the same letters of measurement were not different according to Duncan’s test (P ≤ .05)

10 ℃

PC 18:3

0

66.5 ± 0.3^a

41.7 ± 0.4^a

160.6 ± 0.6^a

 + PC 16:0 (1:1)

CS

65.4 ± 0.1^b

38.8 ± 0.5^b

112.9 ± 0.9^b

x_CS = 0.25

64.6 ± 0.3^c

37.4 ± 0.4^c

94.7 ± 1.3^c

x_CS = 0.5

62.0 ± 0,2^d

35.4 ± 0.8^d

70.0 ± 0.5^d

x_CS = 0.75

60.8 ± 0,2^e

28.1 ± 0.4^e

58.3 ± 0.6^e

HCS

58.6 ± 0,3^f

27.6 ± 0.6^f

57.7 ± 0.7^e

20 ℃

0

63.4 ± 0.4^f

43.4 ± 0.4^a

98.6 ± 0.9^a

CS

71.4 ± 0.2^e

43.5 ± 0,4^a

73.4 ± 0.8^b

x_CS = 0.75

74.5 ± 0.4^d

43.5 ± 0,3^a

73.0 ± 0.9^b

x_CS = 0.5

75.1 ± 0.3^c

41.0 ± 0,2^b

68.5 ± 1.6^c

x_CS = 0.25

75.4 ± 0.3^b

41.0 ± 0,3^b

63.3 ± 1.3^d

HCS

72.9 ± 0,5^a

43.7 ± 0,4^a

61.0 ± 0.9^e

30 ℃

0

74.8 ± 0.5^b

41.7 ± 0.5^a

89.5 ± 0.7^a

CS

76.6 ± 0.6^a

41.4 ± 0.6^a

72.5 ± 0.6^b

x_CS = 0.75

76.0 ± 0.4^a

41.4 ± 0.5^a

70.1 ± 0.5^b

x_CS = 0.5

75.2 ± 0.4^b

39.6 ± 0.7^b

65.1 ± 0.8^c

x_CS = 0.25

71.2 ± 0.2^c

38.3 ± 0.5^c

64.4 ± 0.6^c

HCS

70.8 ± 0.5^c

32,1 ± 0.4^d

64.8 ± 1.7^c