Effect of Beeswax Coating on the Quality of Eggplant Fruit During Cold Storage and Optimization of Coating Conditions

Table 1

Response surface methodology Box-Behnken design of experiment for process factors (X) and their responses (Y) for beeswax coating.

Runs	Factors			Response (Y)
	X1	X2	X3	WL				F	TPC	AA	AOA
1	5	3	10	31.68	78.69	−1.7	25.3	32.86	133.53	98.34	131.55
2	5	1	6.5	26.96	80.84	−2.13	23.63	33.14	137.45	113.74	135.70
3	3	5	10	36.13	79.35	−2.05	28.32	33.45	146.60	143.21	136.37
4	3	3	6.5	35.95	81	−2.16	23.63	31.58	132.22	110.27	133.96
5	1	1	6.5	52.97	81.16	0.45	30.31	32.34	154.12	89.24	131.26
6	3	3	6.5	31.47	81.29	−2.32	23.21	31.5	132.88	95.09	133.39
7	1	3	3	52.90	81.19	−1.72	22.83	32.07	131.57	63.58	139.36
8	5	3	3	31.54	80.04	−1.98	25.12	32.57	161.63	89.07	129.05
9	3	3	6.5	31.54	81.77	−2.03	23.16	31.28	137.45	98.01	130.69
10	3	5	3	38.78	77.98	−1.72	28.45	33.49	—	66.06	131.26
11	3	1	3	41.37	80.69	−1.47	22.76	33.13	161.96	130.13	150.74
12	3	3	6.5	31.40	81.4	−2.04	23.87	31.21	137.45	110.27	134.54
13	1	3	10	46.63	80.54	−2.19	26.68	33.14	151.18	69.21	117.86
14	3	1	10	31.22	80.56	−1.76	26.04	33.67	104.12	98.51	121.53
15	1	5	6.5	39.08	80.38	−1.98	25	33.27	128.95	80.85	123.94
16	5	5	6.5	31.35	78.61	0.74	32.99	33.28	130.59	82.45	121.53
17	3	3	6.5	35.95	81.57	−2.03	23.16	31.55	132.22	115.89	134.73

Factor: X₁ (coating concentration, %w/v), X₂ (citric acid concentration, %w/v), and X₃ (coating duration). Response (Y): weight loss, WL (g/kg); firmness, F (N); colour ( values); total phenolic content, TPC (mg/kg); ascorbic acid, AA (mg/kg); and total antioxidant capacity, TOA (mg/kg).