KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/123456789/1

Browse

Settings

Subject: search.filters.subject.postharvest

Search Results

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Effects of 1-Methylcyclopropene, Gibberellic Acid, and Aloe vera Coating on Lime Storage Life and Fruit Quality
    (2023-01-01)
    Lerslerwong, Ladawan
    ;
    Buapuean, Chompoonut
    ;
    Rugkong, Adirek
    ;
    Bunya-Atichart, Kanokporn
    Limes (Citrus aurantifolia Swingle) have a short postharvest life. Therefore, effective treatments increasing storage life to lengthen the time that produce remains fresh is desirable. This study evaluated the effects of postharvest treatments of 1-methylcyclopropene (1-MCP), gibberellic acid (GA<inf>3</inf>), and Aloe vera on lime storage life and fruit quality. The optimum individual treatments of 50% Aloe vera coating, 300 mL·L<sup>−1</sup> GA<inf>3</inf>, and 750 nL·L<sup>−1</sup> 1-MCP were identified as most effective in extending lime postharvest life. Under ambient conditions (26.4 ± 1.0°C, 64.4 ± 7.4% RH), 1-MCP fumigation was the best treatment, increasing lime postharvest life to 28.2 days. The 1-MCP-treated fruit had a higher juice content than the control fruit. Also, soluble solid contents and titratable acidity were not significantly different, while ascorbic acid was lower than the control. Under cold room conditions (10.0 ± 0.3°C, 68.9 ± 12.4% RH), 1-MCP fumigation followed by Aloe vera coating was the best treatment, increasing lime storage life by 38.7 days. The longer storage time did reduce juice content in treated limes compared to untreated fruit. However, the treatment did not affect the soluble solid contents, titratable acidity, or ascorbic acid level. In conclusion, for optimum postharvest life in limes stored under ambient conditions, fumigation with 1-MCP is best. While for limes stored in cold rooms, a cotreatment of 1-MCP fumigation followed by Aloe vera coating maximizes postharvest life.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Edible coating of chitosan ionically combined with κ-carrageenan maintains the bract and postharvest attributes of dragon fruit (Hylocereus undatus)
    (2021-08-01)
    H., Nguyen T.
    ;
    P., Boonyaritthongchai
    ;
    M., Buanong
    ;
    S., Supapvanich
    ;
    C., Wongs Aree
    Dragon fruit (Hylocereus undatus) has medicinal properties due to its rich antioxidant profile. Dragon fruit also has an attractive appearance of red peel and green bracts. However, shrivelling and weight loss, bract yellowing, and postharvest diseases are major challenges to the dragon fruit trade. The objective of the present work was, therefore, to formulate a coating composed of chitosan and κ-carrageenan for dragon fruits during storage at 10°C. The composite coating based on 1% chitosan (w/v) and 0.2% (w/v) κ-carrageenan with 0.75% (w/v) glycerol as a plasticiser effectively reduced the physiological weight loss and maintained the freshness of the dragon fruits, while increasing the phenolic content and maintaining the titratable acidity in the pulp. The composite coating delayed chlorophyll degradation by suppressing chlorophyllase and chlorophyll-degrading peroxidase, thereby maintaining the chlorophyll content (45.46 mg/100 g dry weight) and freshness of the bracts. However, the composite coating did not possess a strong effect on enhancing chitinase and β-1-3 glucanase activities of dragon fruits during storage and controlling disease symptoms.