Table 3 Results of analysis of dose per unit lighting energy consumption with various light sources.

From: Energy-efficient production of vaccine protein against porcine edema disease from transgenic lettuce (Lactuca sativa L.)

 

Light intensity (PPFD)

(A)

(B)

(C)

(D)

(E)

(F)

(G)

(H)

(I)

(J)

(K)

(L)

μmol/m2/s1

Lighting energy consumption per day

Lighting energy consumption per cultivation period

Fresh weight

Fresh weight per shelf

Moisture content

Stx2eB concentration

Total soluble protein (TSP)

% Stx2eB content/TSP

Stx2eB yield per plant

Stx2eB yield per shelf

Dose per shelf

Dose per lighting energy consumption

kWh day−1

kWh period−1

g plant−1

kg/shelf (336plants)

%

mg gDW−1 ± SD

mg g DW−1 ± SD

%

mg plant−1

mg shelf−1

Dose

kWh Dose−1

Fluorescent light

400

98

3430

219.2

73.6

7.0

10.2 ± 1.4

81.0 ± 14.0

12.7

157.6

52,940

7672

0.4

LED

400

30

1050

207.2

69.6

6.2

10.1 ± 0.4

74.1 ± 15.1

13.6

129.1

43,367

6285

0.2

High rendering LED

400

40

1400

205.6

69.1

7.2

10.3 ± 1.0

70.3 ± 22.9

14.7

153.1

51,437

7455

0.2

Red green blue LED

400

160

5600

179.1

60.2

6.6

9.9 ± 1.6

76.3 ± 18.5

13.0

116.9

39,269

5691

1.0

Red blue LED

180

67

2345

180

60.5

6.1

9.5 ± 1.4

79.6 ± 13.5

12.0

105.1

35,325

5120

0.5

  1. Mean lighting energy consumption per day (24 h photoperiod), photoperiod and photosynthetic photon flux densities (PPFDs) treatments during 35 days of cultivation, and their combined effects on fresh weight (g plant−1), total soluble protein (mg DW−1), and Stx2eB concentration (mg g DW−1/mg 100 g FW−1) are shown. Stx2eB yield per shelf was calculated at 336 plants per shelf. One dose was calculated as 6.9 mg, from a previous study25.
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