Applied Biological Chemistry

Table 5 Quality characteristics of leaf lettuce produced with the different amendments

From: Effects of brewer’s spent grain biochar on the growth and quality of leaf lettuce (Lactuca sativa L. var. crispa.)

Treatment	Sweetness degree (Brix)	Nitrate-nitrogen (mg kg⁻¹)	Chlorophyll (SPAD)	Anthocyanin (mg g⁻¹)
Control	3.30 ± 0.36^b	773.3 ± 198.6^d	31.03 ± 1.50^abc	0.25 ± 0.05^a
BSG 2%	2.47 ± 0.50^de	1236.6 ± 398.8^c	28.60 ± 2.23^bcd	0.25 ± 0.11^ab
BSG 5%	3.17 ± 0.25^bc	1466.6 ± 152.8^bc	26.33 ± 1.40^cd	0.15 ± 0.07^b
BB₃₀₀ 2%	2.67 ± 0.06^cd	1333.3 ± 321.5^c	27.93 ± 2.36^cd	0.21 ± 0.07^ab
BB₃₀₀ 5%	1.67 ± 0.35^f	1073.3 ± 241.1^cd	28.87 ± 3.95^abcd	0.26 ± 0.02^a
BB₅₀₀ 2%	2.07 ± 0.25^ef	2200.0 ± 264.6^a	33.73 ± 4.16^a	0.26 ± 0.00^a
BB₅₀₀ 5%	3.00 ± 0.20^bcd	1466.6 ± 251.7^bc	33.27 ± 2.94^ab	0.26 ± 0.03^a
BB₇₀₀ 2%	3.07 ± 0.23^bc	1866.6 ± 152.8^ab	29.63 ± 2.46^abcd	0.28 ± 0.04^a
BB₇₀₀ 5%	3.83 ± 0.31^a	1466.7 ± 152.8^bc	25.47 ± 1.36^d	0.26 ± 0.03^a

The letters denote significant differences amongst the different treatments based on the results of the Tukey posthoc tests
BSG brewer’s spent grain, BBxxx brewer’s spent grain biochar (pyrolyzed at xxx℃)

Back to article page