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. 2022 Jun;24(4):697-703.
doi: 10.1111/plb.13362. Epub 2021 Nov 15.

Hydrogen sulphide infiltration downregulates oxidative metabolism and extends postharvest life of banana

M W Siddiqui  1 , F Homa  2 , D Lata  3 , H Mir  4 , T Aftab  5 , P Mishra  6
Affiliations

Hydrogen sulphide infiltration downregulates oxidative metabolism and extends postharvest life of banana

M W Siddiqui et al. Plant Biol (Stuttg). 2022 Jun.

Abstract

Hydrogen sulphide (H2 S) has emerged as a potential regulator of plant defence against different abiotic stresses. As a climacteric fruit, banana undergoes oxidative stresses shortly after harvest, resulting in faster ripening and senescence. This work examines the effects of vacuum infiltrated H2 S on ripening inhibition of banana. Banana fruits were vacuum infiltrated with 1 mm H2 S. Effects on oxidative stress markers, physiological changes, bioactive compounds and antioxidant potentials were examined during storage at 25 °C and 75-80% RH. Results indicate that treated fruits were less affected by oxidative stress, as evident by lower accumulation of ROS (superoxide and peroxide ions), elevated phenols content and antioxidant capacity. The ripening inhibitory effects of H2 S delayed chlorophyll loss and reduced ethylene and CO2 production. H2 S infiltration also reduced MDA accumulation and electrolytic leakage, resulting in longer shelf life. Vacuum infiltration with H2 S had a protective effect on postharvest banana through overcoming the deleterious effect of ROS and strengthening antioxidant potential. Thus, this method could be promising for enhanced preservation of banana during storage.

Keywords: Antioxidant activity; hydrogen sulphide; pre-climacteric; shelf life; vacuum infiltration.

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References

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