Page 133 - EER-2-3

Explora: Environment
and Resource Low-cost hydroponic for chili production

Table A4. Physiological response of plants
Experimental group H O content (µmol/g ) MDA level (µmol/g ) SOD (U/g/min) CAT (U/g/min)
fw
fw
2 2
Set I 2.37 (0.079) a 2.80 (0.036) a 43.00 (0.382) a 42.00 (0.034) a
Set II 2.47 (0.028) a 2.40 (0.032) a 45.00 (0.279) a 43.33 (0.031) a
Set III 6.43 (0.019) b 4.60 (0.032) b 24.00 (1.009) b 22.67 (1.456) b
Notes: Data presented as the mean (SD); means followed by the same letters are not significantly different according to Duncan’s multiple range test
(p<0.05).
Abbreviations: CAT: Catalase; H2O2: Hydrogen peroxide; MDA: Malondialdehyde; SOD: Superoxide dismutase.

Table A5. Correlation analysis between yield and nutritional performance (Vitamin C and capsaicin) with stress markers (H O ,
2
2
MDA) and antioxidant enzymes (SOD, CAT)
Parameters Variables Correlation coefficient (τ) p‑value*
Yield H O 2 −0.208 <0.05
2
MDA −0.604 <0.05
SOD 0.770 <0.05
CAT 0.737 <0.05
Vitamin C H O −0.385 <0.05
2 2
MDA −0.206 <0.05
SOD 0.567 <0.05
CAT 0.476 <0.05
Capsaicin H O −0.301 <0.05
2 2
MDA −0.247 <0.05
SOD 0.648 <0.05
CAT 0.553 <0.05
Note: *p<0.05 indicates significant statistical correlation.
Abbreviations: CAT: Catalase; H O : Hydrogen peroxide; MDA: Malondialdehyde; SOD: Superoxide dismutase.
2
2

Table A6. Participants’ responses (n=20) on a 1–5 scale regarding accessibility, technical difficulty, and cost‑effectiveness of the
low‑cost hydroponic system using plastic bottles
Parameter 1 2 3 4 5 Total response
Accessibility 0 0 2 3 15 20
Technical difficulty 12 5 3 0 0 20
Cost-effectiveness 0 0 1 7 12 20
Note: Scale: 1=very low; 5=very high.

Volume 2 Issue 3 (2025) 13 doi: 10.36922/EER025250050