Effect of Postharvest Treatments on Biochemical and Bioactive Compounds of Custard Apple (Annona Squamosa L.) Cv. Balanagar

Figures & data

Table 1. Effect of different postharvest treatments on total soluble solids (°Brix) of custard apple cv. Balanagar during ambient storage.

Treatments	Total Soluble Solids (°Brix) Storage interval (days)
	0	3	6	9
OA (2.5 mM)	21.70	24.2 (11.52)	27.50 (26.72)	28.08 (29.4)
OA (5 mM)	22.26	25.14 (12.93)	29.90 (34.32)	28.80 (29.38)
OA (7.5 mM)	22.20	25.3 (13.96)	28.68 (29.18)	28.52 (28.46)
OA (10 mM)	21.47	25.4 (18.3)	27.60 (28.55)	29.10 (35.53)
SA (0.5 mM)	21.92	25.34 (15.6)	28.12 (28.28)	29.14 (32.93)
SA (1.0 mM)	21.64	25.48 (17.74)	28.10 (29.85)	29.32 (35.48)
SA (1.5 mM)	22.67	25.19 (11.11)	28.97 (27.79)	29.20 (28.80)
SA (2.0 mM)	22.20	25.88 (16.57)	28.26 (27.29)	29.07 (30.94)
SNP (0.5 mM)	24.10	27.2 (12.86)	28.40 (17.84)	30.26 (25.56)
SNP (1.0 mM)	21.80	25.64 (17.61)	28.30 (29.81)	29.16 (33.76)
SNP (1.5 mM)	23.10	25.04 (8.39)	28.74 (24.41)	30.62 (32.55)
SNP (2.0 mM)	22.20	24.9 (12.16)	29.10 (31.08)	30.80 (38.73)
Control	22.37	24.7 (10.41)	27.90 (24.72)	28.10 (25.61)
LSD (p ≤ .05)	0.96	0.51	0.12	0.12

1. Data variation lying in the range of 25.61 to 44.89%, they were subjected to Arc sine transformed values. The variation not varying between 0 to 30 or 70 to 100 were subjected to Arc Sine transformation. 2. CD has been calculated based on percentage value. 3. Abbr. OA: Oxalic acid; SA: Salicylic acid; SNP: Sodium nitroprusside.

Table 2. Effect of different postharvest treatments on titratable acidity (%) of custard apple cv. Balanagar during ambient storage.

Treatments	Titratable acidity (%) Storage interval (days)
	0	3	6	9
OA (2.5 mM)	0.60	0.56 (6.66)	0.35 (41.66)	0.27 (55.00)
OA (5 mM)	0.64	0.43 (32.81)	0.31 (51.56)	0.27 (57.81)
OA (7.5 mM)	0.38	0.35 (7.89)	0.31 (18.42)	0.27 (28.94)
OA (10 mM)	0.51	0.39 (23.52)	0.31 (39.21)	0.27 (47.05)
SA (0.5 mM)	0.51	0.39 (23.52)	0.35 (31.37)	0.28 (45.09)
SA (1.0 mM)	0.38	0.35 (7.89)	0.31 (18.42)	0.29 (23.68)
SA (1.5 mM)	0.51	0.43 (15.68)	0.35 (31.37)	0.29 (43.13)
SA (2.0 mM)	0.64	0.56 (12.50)	0.31 (51.56)	0.27 (57.81)
SNP (0.5 mM)	0.38	0.31 (18.42)	0.28 (26.31)	0.28 (26.31)
SNP (1.0 mM)	0.41	0.35 (14.63)	0.3 (26.82)	0.27 (34.14)
SNP (1.5 mM)	0.64	0.56 (12.50)	0.37 (42.18)	0.31 (51.56)
SNP (2.0 mM)	0.64	0.56 (12.50)	0.43 (32.81)	0.33 (48.43)
Control	0.38	0.31 (18.42)	0.27 (28.94)	0.23 (39.47)
LSD (p ≤ .05)	0.025	0.09	0.11	0.14

1. Data variation lying in the range of 32.81 to 57.81%, they were subjected to Arc sine transformed values. The variation not varying between 0 to 30 or 70 to 100 were subjected to Arc Sine transformation. 2. CD has been calculated based on percentage value. 3. Abbr. OA: Oxalic acid; SA: Salicylic acid; SNP: Sodium nitroprusside.

Table 3. Effect of different postharvest treatments on total sugars (%) of custard apple cv. Balanagar during ambient storage.

Treatments	Total sugars (%) Storage interval (days)
	0	3	6	9
OA (2.5 mM)	15.86	19.36 (22.06)	23.17 (46.09)	23.87 (50.50)
OA (5 mM)	16.96	21.74 (28.18)	25.52 (50.47)	24.21 (42.74)
OA (7.5 mM)	16.47	21.20 (28.71)	24.96 (51.54)	24.11 (46.38)
OA (10 mM)	17.24	21.03 (21.98)	25.65 (48.78)	24.65 (42.98)
SA (0.5 mM)	16.68	20.31 (21.76)	24.51 (46.94)	24.03 (44.06)
SA (1.0 mM)	15.41	19.56 (26.93)	23.57 (52.95)	24.06 (56.13)
SA (1.5 mM)	14.76	17.36 (17.61)	21.95 (48.71)	24.99 (69.30)
SA (2.0 mM)	15.5	20.69 (33.48)	23.82 (53.67)	23.97 (54.64)
SNP (0.5 mM)	16.71	20.56 (23.04)	23.63 (41.41)	23.97 (43.44)
SNP (1.0 mM)	16.48	20.45 (24.08)	24.90 (51.09)	24.53 (48.84)
SNP (1.5 mM)	15.76	18.03 (14.40)	22.61 (43.46)	24.53 (55.64)
SNP (2.0 mM)	15.09	18.35 (21.60)	23.31 (54.47)	25.09 (76.26)
Control	15.99	18.10 (13.19)	21.01 (31.39)	20.19 (26.26)
LSD (p ≤ .05)	0.79	0.95	0.11	0.17

1. Data variation lying in the range of 33.48 to 76.26%, they were subjected to Arc sine transformed values. The variation not varying between 0 to 30 or 70 to 100 were subjected to Arc Sine transformation. 2. CD has been calculated based on percentage value. 3. Abbr. OA: Oxalic acid; SA: Salicylic acid; SNP: Sodium nitroprusside.

Figure 1. Effect of different postharvest treatments on total phenol content (mg GAE/100 g) of custard apple cv. Balanagar during ambient storage *The graph shows mean value of three replicates and the vertical bars represent the standard error value of the replicates. Abbr. OA: Oxalic acid; SA: Salicylic acid; SNP: Sodium nitroprusside.

Table 4. Effect of different postharvest treatments on antioxidant activity (µmol Trolox Equivalent (TE) /g) of custard apple cv. Balanagar during ambient storage.

Treatments	Antioxidant activity (µmol Trolox Equivalent (TE) /g) Storage interval (days)
	0	3	6	9
OA (2.5 mM)	1.40	1.17 (16.42)	0.87 (37.85)	0.26 (81.42)
OA (5 mM)	1.82	1.57 (13.73)	1.02 (43.95)	0.48 (73.62)
OA (7.5 mM)	1.63	1.33 (18.40)	0.83 (49.07)	0.41 (74.84)
OA (10 mM)	1.61	1.40 (13.04)	0.91 (43.47)	0.32 (80.12)
SA (0.5 mM)	1.74	1.62 (6.89)	1.03 (40.80)	0.56 (67.81)
SA (1.0 mM)	1.92	1.77 (7.81)	1.12 (41.66)	0.54 (71.87)
SA (1.5 mM)	1.90	1.77 (6.84)	1.32 (30.52)	0.62 (67.36)
SA (2.0 mM)	1.65	1.37 (16.96)	0.82 (50.3)	0.34 (79.39)
SNP (0.5 mM)	1.78	1.48 (16.85)	0.58 (67.41)	0.29 (83.70)
SNP (1.0 mM)	1.76	1.44 (18.18)	1.04 (40.90)	0.33 (81.25)
SNP (1.5 mM)	1.23	1.01 (17.88)	0.69 (43.90)	0.57 (53.65)
SNP (2.0 mM)	1.41	1.20 (14.89)	1.06 (24.82)	0.92 (34.75)
Control	1.26	1.02 (19.04)	0.56 (55.55)	0.18 (85.71)
LSD (p ≤ .05)	0.07	0.73	0.15	0.23

1. Data variation lying in the range of 30.52 to 71.87%, they were subjected to Arc sine transformed values. The variation not varying between 0 to 30 or 70 to 100 were subjected to Arc Sine transformation. 2. CD has been calculated based on percentage value. 3. Abbr. OA: Oxalic acid; SA: Salicylic acid; SNP: Sodium nitroprusside.

Table 5. Effect of different postharvest treatments on ascorbic acid (mg/100 g) of custard apple cv. Balanagar during ambient storage.

Treatments	Ascorbic acid (mg/100 g) Storage interval (days)
	0	3	6	9
OA (2.5 mM)	35.30	42.54 (20.50)	41.53 (17.64)	37.04 (4.92)
OA (5 mM)	35.84	41.60 (16.07)	38.20 (6.58)	37.24 (3.90)
OA (7.5 mM)	35.54	41.40 (16.48)	38.60 (8.61)	36.72 (3.32)
OA (10 mM)	36.42	42.60 (16.96)	40.20 (10.37)	38.68 (6.20)
SA (0.5 mM)	36.30	43.40 (19.55)	43.24 (19.11)	39.20 (7.98)
SA (1.0 mM)	37.30	42.40 (13.67)	40.60 (8.84)	38.09 (2.11)
SA (1.5 mM)	36.40	42.60 (17.03)	42.12 (15.71)	38.56 (5.93)
SA (2.0 mM)	39.80	48.27 (21.28)	46.20 (16.08)	43.30 (8.79)
SNP (0.5 mM)	38.40	44.38 (15.57)	42.22 (9.94)	40.02 (4.21)
SNP (1.0 mM)	35.20	42.28 (20.11)	40.23 (14.28)	37.80 (7.38)
SNP (1.5 mM)	37.20	44.3 (19.08)	42.60 (14.51)	40.28 (8.27)
SNP (2.0 mM)	39.30	48.37 (23.07)	47.24 (20.20)	43.20 (9.92)
Control	36.20	40.20 (11.04)	38.42 (6.13)	36.29 (0.24)
LSD (p ≤ .05)	1.94	0.81	0.44	0.26

1. Data in parenthesis indicates percent decrease in ascorbic acid 2. CD has been calculated based on percentage value. 3. Abbr. OA: Oxalic acid; SA: Salicylic acid; SNP: Sodium nitroprusside.

Figure 2. Effect of different postharvest treatments on total flavonoid (µg CE /100 g) of custard apple cv. Balanagar during ambient storage *The graph shows mean value of three replicates and the vertical bars represent the standard error value of the replicates. Abbr. OA: Oxalic acid; SA: Salicylic acid; SNP: Sodium nitroprusside.

Table 6. Effect of different postharvest treatments on tannin content (mg catechin equivalent (CE)/g) of custard apple cv. Balanagar during ambient storage.

Treatments	Tannin content (mg Catechin Equivalent (CE) /g) Storage interval (days)
	0	3	6	9
OA (2.5 mM)	1.13	1.10 (2.65)	0.98 (13.27)	0.72 (36.28)
OA (5 mM)	0.87	0.83 (4.59)	0.76 (12.64)	0.58 (33.33)
OA (7.5 mM)	1.32	1.12 (15.15)	0.97 (26.51)	0.79 (40.15)
OA (10 mM)	1.3	1.23 (5.38)	1.12 (13.84)	0.90 (30.76)
SA (0.5 mM)	1.34	1.26 (5.97)	1.04 (22.38)	0.79 (41.04)
SA (1.0 mM)	1.32	1.30 (1.51)	1.18 (10.60)	0.97 (26.51)
SA (1.5 mM)	1.54	1.45 (5.84)	1.32 (14.28)	1.02 (33.76)
SA (2.0 mM)	1.62	1.57 (3.08)	1.49 (8.02)	1.16 (28.39)
SNP (0.5 mM)	1.42	1.41 (0.70)	1.27 (10.56)	1.05 (26.05)
SNP (1.0 mM)	1.47	1.42 (3.40)	1.32 (10.2)	1.11 (24.48)
SNP (1.5 mM)	1.52	1.46 (3.94)	1.34 (11.84)	1.18 (22.36)
SNP (2.0 mM)	1.6	1.59 (0.62)	1.47 (8.12)	1.28 (20.00)
Control	0.98	0.92 (6.12)	0.75 (23.46)	0.54 (44.89)
LSD (p ≤ .05)	0.06	0.26	0.61	0.10

1. Data variation lying in the range of 20.00 to 44.89%, they were subjected to Arc sine transformed values. The variation not varying between 0 to 30 or 70 to 100 were subjected to Arc Sine transformation. 2. CD has been calculated based on percentage value. 3. Abbr. OA: Oxalic acid; SA: Salicylic acid; SNP: Sodium nitroprusside.