Skip to main content

Table 3 Statistically significant parameters obtained by multiple regression analysis, and by correlations between experimental and calculated values

From: Antimicrobial structure activity relationship of five anthraquinones of emodine type isolated from Vismia laurentii

Parameters

pH 7

pH 6

pH 5

coef ± errSt

ICf 95%

ICs95%

P

coef ± errSt

ICf 95%

ICs95%

P

coef ± errSt

ICf 95%

ICs95%

P

Const

1.671 ± 0.072

1.531

1.813

0

2.410 ± 0.156

2.104

2.716

0

2.197 ± 0.206

1.792

2.601

0

Log Ko/w

0.488 ± 0.020

0.448

0.528

0

NS

-

-

-

NS

-

-

-

MW (mol/g)

NS

-

-

-

−0.077 ± 0.009

−0.094

−0.059

0

0.092 ± 0.012

−0.116

−0.069

0

HA

0.774 ± 0.031

0.714

0.835

0

1.321 ± 0.142

1.043

1.598

0

1.620 ± 0.187

1.254

1.987

0

Polarz

−0.147 ± 0.006

−0.158

−0.135

0

0.537 ± 0.065

0.409

0.665

0

0.642 ± 0.086

0.473

0.810

0

R2 Model

 

0.995

   

0.943

   

0.936

  

SSE Model

 

0.001

   

0.015

   

0.026

  
  1. coef ± errSt parameters coefficient, P probability of kindness of the equation, Const constancy, MW molecular weight, Log K o/w (or Log P) partition coefficient, Polarz polarizability, HA hydrogen bond acceptor, NS non significative, IC f 95% and IC s 95% inferior (ICf) and superior (ICs) confidence interval, correlation values: R2 model and SSE model