Multivariate analysis of guava fruits stored under different temperatures and modified atmosphere

Galli, Juliana Altafin; Palharini, Maria Cecília de Arruda; Torres, E.M.J.; Michelotto, Marcos Donizeti; Fischer, Ivan Herman; Bertani, Rosemary Marques de Almeida; Martins, Antonio Lucio Melo

doi:10.17660/actahortic.2019.1256.83

Cited by 1 publication

(1 citation statement)

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“…3) as well. Even though literature on Multivariate analysis of fruit quality changes due to ethylene inhibitors, is sparse Galli et al (2019) suggested that surface colour in guava is the major attribute in judging the ripening status of guava fruits in MAP stored fruits. Cai et al (2019) in non climacteric 'Ponkan mandarin' concluded that PCA and correlation studies help in clustering different parameters which makes easier approach in judging the fruit ripening.…”

Section: Resultsmentioning

confidence: 99%

Differential effects of postharvest application of ethylene inhibitors on guava stored under ambient conditions

Sachin¹,

Rao²,

Ranjitha³

et al. 2021

JEB

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Aim: To assess the efficiency of ethylene synthesis and action inhibitors on postharvest shelf life of guava fruits under ambient conditions. Methodology: Mature green guava fruits (P. guajava L. cv. Arka Mridula) were harvested and treated with ethylene inhibitors. Various physiological, physical and nutritional changes of the treated fruits in comparison with untreated ones were monitored during ambient temperature storage. Multivariate analysis approach was used for interpreting the data on quality changes during storage. Results: Significant positive correlation (p<0.01) was observed among rates of ethylene production, respiration, ripening and Hunter’s a* value. Biplot from principal component analysis of eleven parameters showed that 1-MCP (500 ppb) treated fruits were grouped together with freshly harvested fruits throughout storage period, and proved superior over other treatments in delaying ripening and quality maintenance. Seven days stored 3.0 mM Salicylic acid and 1.5 mM Sodium nitroprusside treated fruits were grouped together with 5 days stored control fruits, suggesting their effectiveness in extending the shelf life by additional two days. Interpretation: Postharvest application of 1-MCP on guava fruits can extend the shelf life by four days when compared with control. Even PCA indicated that the study of major ripening attributes (L*, a*, b*, Hue, texture, acidity, ethylene rate and respiration rate) was quite sufficient to know the ripening status of the fruits.

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Section: Resultsmentioning

confidence: 99%