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. 2022 Oct 6;13:1016324. doi: 10.3389/fpls.2022.1016324

Table 3.

Commission Internationale de I’Eclairage color parameters of pointed gourd up to acceptance level under different postharvest treatment and packaging conditions.

Treatment CIE lightness coordinate (L*) a* b* Hue value (h*) Chroma (C*)
LT (4°C) RT (30°C) LT (4°C) RT (30°C) LT (4°C) RT (30°C) LT (4°C) RT (30°C) LT (4°C) RT (30°C)
P1C1 39.1 ± 0.4f–i 74.1 ± 4.5 -7.2 ± 0.0a–d -7.6 ± 0.1ab 17.6 ± 1.5g 20.6 ± 0.2h 19.4 ± 1.2ij 33.9 ± 2.1l 69.8 ± 0.2g 21.9 ± 0.1i
P1C2 35.2 ± 4.3hi 71.8 ± 1.8 -7.1 ± 0.2a–d -4.9 ± 0.7de 21.5 ± 2.8fg 34.9 ± 0.3abc 23.0 ± 2.7g–j 51.3 ± 0.4a–d 81.8 ± 1.1a–c 35.4 ± 0.2bc
P1C3 44.1 ± 2.2c–g 72.8 ± 0.3 -7.7 ± 0.1a–d -8.4 ± 0.6ab 24.8 ± 0.7d–g 24.2 ± 1.3fgh 25.8 ± 0.6e–g 44.2 ± 0.8e–j 71.3 ± 0.5fg 25.2 ± 1.1e–i
P1C4 46.7 ± 0.4b–f 85.1 ± 0.6 -2.2 ± 0.2h -1.5 ± 0.3h 26.4 ± 4.3c–g 22.8 ± 0.2gh 25.2 ± 3.7f–i 40.0 ± 0.1h–l 85.9 ± 0.2a 23.0 ± 0.1hi
P2C1 46.2 ± 0.4b–f 76.2 ± 1.1 -8.3 ± 0.9abc -6.9 ± 1.1bc 34.4 ± 0.3a–d 27.0 ± 2.6c–h 35.5 ± 0.4a–d 45.1 ± 1.7e–h 77.8 ± 2.9cd 28.8 ± 2.3de
P2C2 49.0 ± 0.6a–e 76.1 ± 0.9 -7.7 ± 0.4a–d -3.5 ± 0.3efg 31.9 ± 0.9a–e 42.6 ± 0.2a 32.6 ± 0.6cd 56.4 ± 0.8a 85.0 ± 0.7a 42.8 ± 0.2a
P2C3 51.8 ± 1.4a–c 80.8 ± 0.0 -6.3 ± 0.1a–e -8.8 ± 0.5a 38.7 ± 0.8ab 28.0 ± 2.2c–h 38.9 ± 0.7ab 46.8 ± 1.1d–g 71.9 ± 2.1fg 28.7 ± 1.5d–f
P2C4 34.7 ± 1.9i 83.0 ± 0.0 -2.4 ± 0.2h -3.3 ± 0.5efg 19.0 ± 0.5g 24.9 ± 0.3e–h 19.3 ± 0.5ij 38.6 ± 0.5i–l 82.7 ± 1.0ab 25.3 ± 0.0e–i
P3C1 52.9 ± 0.7ab 77.8 ± 2.7 -8.0 ± 1.6abc -7.6 ± 0.8ab 40.2 ± 2.6a 32.9 ± 1.2cde 40.4 ± 1.9a 53.0 ± 5.2a–c 77.0 ± 1.9c–e 33.8 ± 1.0c
P3C2 51.5 ± 1.2a–d 63.6 ± 23.7 -7.2 ± 2.4a–d -7.2 ± 0.5abc 35.5 ± 2.0abc 34.0 ± 1.0bcd 35.9 ± 1.9a–d 47.8 ± 0.9c–f 77.9 ± 0.3b–d 35.0 ± 1.0bc
P3C3 50.5 ± 7.0a–e 81.1 ± 2.4 -5.7 ± 1.3c–f -8.1 ± 0.7ab 41.3 ± 4.5a 26.9 ± 0.6c–h 39.6 ± 4.7ab 43.6 ± 3.0f–j 72.7 ± 1.4e–g 28.1 ± 0.3e–g
P3C4 42.6 ± 0.5e–h 80.5 ± 0.2 -3.3 ± 0.2fgh -2.8 ± 0.2fgh 19.5 ± 0.4g 24.2 ± 0.7fgh 19.7 ± 0.4h–i 37.2 ± 0.4kl 83.6 ± 0.3a 24.4 ± 0.7g–i
P4C1 43.9 ± 1.8c–g 73.9 ± 1.3 -8.5 ± 0.1ab -7.7 ± 0.6ab 30.5 ± 2.4b–f 32.0 ± 1.5c–f 31.0 ± 2.0d–f 52.3 ± 2.0a–d 77.4 ± 3.0c–e 34.2 ± 3.1c
P4C2 42.8 ± 4.0e–h 76.2 ± 2.3 -7.4 ± 0.4a–d -4.0 ± 0.4def 32.1 ± 4.3a–e 30.5 ± 8.4c–g 31.8 ± 3.5c–e 44.6 ± 3.8e–i 83.3 ± 2.0a 24.6 ± 1.0f–i
P4C3 48.3 ± 3.6a–e 77.7 ± 6.1 -5.9 ± 2.5b–f -7.8 ± 0.2ab 35.7 ± 8.3abc 31.6 ± 1.1c–f 37.4 ± 3.2a–c 54.4 ± 0.7ab 76.0 ± 0.1d–f 32.2 ± 0.9cd
P4C4 36.3 ± 0.5g–i 81.8 ± 0.0 -2.7 ± 0.2gh -1.8 ± 0.1gh 17.7 ± 0.1g 24.0 ± 0.1fgh 17.9 ± 0.1j 41.1 ± 0.1g–k 85.7 ± 0.1a 24.1 ± 0.15g–i
P5C1 50.8 ± 1.1a–d 80.5 ± 2.5 -5.2 ± 0.1d–g -7.5 ± 0.6ab 36.8 ± 0.5ab 30.1 ± 3.0c–g 37.4 ± 0.4a–c 53.5 ± 4.3a–c 77.0 ± 3.8c–e 35.2 ± 2.5bc
P5C2 49.0 ± 2.9a–e 63.6 ± 23.1 -7.7 ± 2.0a–d -4.5 ± 0.4def 34.8 ± 0.3abc 41.5 ± 0.5ab 36.5 ± 1.5a–d 54.0 ± 0.7ab 85.5 ± 2.2a 42.3 ± 0.9a
P5C3 56.1 ± 2.2a 77.5 ± 1.8 -8.9 ± 0.9a -5.5 ± 1.6cd 36.3 ± 8.6ab 34.1 ± 7.1bcd 33.6 ± 2.0b–d 52.2 ± 2.1a–d 84.8 ± 1.6a 38.9 ± 2.3ab
P5C4 35.1 ± 0.1hi 82.7 ± 0.4 -2.6 ± 0.3gh -1.8 ± 0.1gh 19.3 ± 0.3g 26.5 ± 0.1d–h 19.3 ± 0.1ij 38.2 ± 0.2j–l 85.9 ± 0.1a 26.5 ± 0.1e–h
P6C1 43.8 ± 0.6d–g 70.6 ± 0.1 -8.2 ± 0.2abc -6.8 ± 0.7bc 23.3 ± 0.7efg 27.9 ± 0.1c–h 24.9 ± 0.7g–i 43.3 ± 1.1f–j 75.9 ± 1.2d–f 28.8 ± 0.2de
P6C2 40.0 ± 4.4f–i 72.1 ± 0.1 -7.6 ± 0.4a–d -6.8 ± 0.1bc 24.1 ± 0.8efg 31.4 ± 1.4c–f 25.5 ± 0.8f–h 50.1 ± 0.6b–e 78.1 ± 0.4b–d 32.7 ± 1.0cd
P6C3 39.5 ± 2.0f–i 72.0 ± 0.3 -8.2 ± 0.5abc -7.6 ± 0.5ab 25.0 ± 1.3d–g 27.2 ± 0.6c–h 25.8 ± 1.0e–g 48.4 ± 0.9b–f 74.6 ± 0.6d–g 27.9 ± 0.4e–g
P6C4 37.1 ± 0.6g–i 81.2 ± 0.7 -3.6 ± 0.3e–h -3.0 ± 0.2fgh 22.8 ± 0.6efg 27.5 ± 2.3c–h 22.8 ± 0.5g–j 40.8 ± 0.2g–k 83.8 ± 0.3a 27.0 ± 2.0e–h
LS *** NS *** *** *** *** *** *** *** ***

Numeric values (±) are standard deviation, and letters in the same row (a–l) are significant differences.

P1 and C1, control; P2 and P3, perforated and non-perforated polyethylene (PPE and NPE, respectively); P4 and P5, perforated and non-perforated polypropylene (PPP and NPP, respectively); P6, brown paper (BP); C2, NaOCl; C3, KMS; C4, blanching. (***p < 0.00, NS, not significant).