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Table 1 Thermokinetic parameters of ampicillin-resistant E. coli growth in the presence of six samples from the leaves of Dracontomelon dao

From: Antibacterial evaluation of plants extracts against ampicillin-resistant Escherichia coli (E. coli) by microcalorimetry and principal component analysis

Extracts

c/μg mL−1

t1/min

P1/mW

Q1/J

k 1

t2/min

P 2

Q 2 /J

k 2

Qt/J

I/%

S1

0

267.2

0.5511

2.6079

0.01126

350.1

0.7023

27.1152

0.00929

29.7231

0.0

80

306.6

0.5447

3.7603

0.00995

393.9

0.8785

17.4783

0.00896

21.2386

3.5

160

439.5

0.4069

3.4218

0.00565

573.9

0.7009

17.1311

0.00527

20.5529

43.2

200

532.6

0.4276

4.7574

0.00433

672.6

0.6575

16.7857

0.00407

21.5431

56.2

240

819.8

0.376

3.1187

0.00304

989.5

0.505

13.9117

0.00282

17.0304

69.6

280

845.6

0.3885

3.4423

0.00295

1035.1

0.5434

15.3056

0.00274

18.7479

70.5

320

1047.0

0.3245

4.4208

0.00210

1274.6

0.4362

12.3450

0.00196

16.7658

78.9

S2

0

246.8

0.7255

3.6592

0.01331

327.4

0.8907

40.9180

0.01066

44.5771

0.0

20

256.5

0.739

5.2648

0.01308

338.3

1.0397

19.5135

0.01093

24.7783

0.0

40

274.7

0.6024

3.9038

0.01047

377.9

0.8822

34.8650

0.00862

38.7688

19.2

80

310.1

0.5412

4.7950

0.00922

480.0

0.7802

21.7137

0.00672

26.5086

36.9

160

535.3

0.371

6.4258

0.00458

641.9

0.4759

17.5933

0.00421

24.0191

60.5

320

1281.3

0.2638

6.0494

0.00156

1376.7

0.2717

15.2971

0.00147

21.3465

86.2

S3

0

255.5

0.7245

5.4127

0.01285

344.7

1.0325

76.7405

0.01055

82.1532

0.0

80

256.5

0.5023

2.4554

0.01157

362.4

0.921

70.7951

0.00986

73.2505

6.5

160

305.9

0.5422

5.0593

0.00905

433.2

0.8036

73.0303

0.00730

78.0896

30.8

320

374.2

0.3447

5.1102

0.00647

605.5

0.5525

34.5903

0.00476

39.7004

54.9

640

94.5

0.1238

1.9171

0.01432

978.1

0.3072

37.6609

0.00231

39.5779

78.1

S4

0

251.1

0.5814

2.5884

0.01220

327.7

0.7375

52.1562

0.01007

54.7446

0.0

40

245.5

0.6108

3.6068

0.01289

338.7

0.7896

57.5782

0.01010

61.1850

0.0

80

262.1

0.5237

3.0778

0.01043

357.3

0.7423

58.3756

0.00863

61.4534

14.3

160

282.4

0.4486

2.8312

0.00946

386.6

0.5798

56.9032

0.00758

59.7344

24.8

320

373.1

0.3794

3.0034

0.00663

471.7

0.4864

59.7257

0.00577

62.7290

42.7

640

619.0

0.323

4.1183

0.00355

705.8

0.3506

7.6208

0.00323

11.7390

67.9

S5

0

232.7

0.5773

2.6695

0.01313

329.4

0.8252

56.5456

0.01036

59.2150

0.0

40

263.6

0.7121

5.2766

0.01259

363.8

0.9302

79.0143

0.00986

84.2910

4.9

80

274.2

0.5664

3.5835

0.01026

402.7

0.7452

45.8086

0.00767

49.3921

26.0

160

421.8

0.6124

7.4357

0.00707

495.0

0.7121

61.1381

0.00633

68.5738

38.9

320

529.5

0.5756

6.0004

0.00546

591.1

0.6197

57.5773

0.00501

63.5777

51.6

640

845.7

0.1652

3.0030

0.00180

1058.8

0.3052

33.0030

0.00202

36.0060

80.5

S6

0

247.9

0.6882

4.4994

0.01303

332.0

0.8665

42.6671

0.01043

47.1665

0.0

20

280.6

0.6708

5.5756

0.01161

398.0

0.8547

35.9981

0.00879

41.5737

15.6

40

388.6

0.5994

5.9808

0.00739

467.6

0.7267

34.1850

0.00655

40.1657

37.2

160

657.2

0.4864

9.9455

0.00419

730.0

0.5284

26.5580

0.00389

36.5035

62.7

320

968.0

0.2628

6.6450

0.00218

1059.8

0.2786

24.9284

0.00204

31.5733

80.4