Youryon, Pannipa
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Preferred name
Youryon, Pannipa
Alternative Name
Youryon, P.
Main Affiliation
Email
pannipa.yo@kmitl.ac.th
18 results
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Item type:Publication, Efficacy of salicylic acid incorporated with lukewarm water immersion on postharvest quality of ‘Leb Mue Nang’bananas (Musa AA) on shelf life storage(2025-05-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Rapid and accurate classification of Aspergillus ochraceous contamination in Robusta green coffee bean through near-infrared spectral analysis using machine learning(2023-03-01); ; ; Near-infrared (NIR) spectral-based classification of Aspergillus ochraceous contamination in the Robusta green coffee bean was investigated. Six different learning algorithms, including linear discriminant analysis (LDA), support vector machine (SVM), k-nearest neighbors (KNN), decision tree (Tree), Naive Bayes (NB), and quadratic discriminant analysis (QDA), were applied for the investigating purpose. Four classes of fungal contamination on coffee beans, non-fungal contaminated beans on day 1 and day 3 (NCB-D1 and NCB-D3) and fungal contaminated beans on day 1 and day 3 (CB-D1 and CB-D3), were set for the classification intention. Based on the 6 learning algorithms, the Tree approach was optimal, displaying a training accuracy of 97.5%. As proven by the testing dataset, the classification accuracy of the Tree was also at 97.5%. With this number, the Tree could correctly classify 100% between the contaminated and non-contaminated coffee beans. These findings exhibit the potential of the NIR spectroscopy accompanied by machine learning for the early detection of fungal contamination in green coffee beans. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Preharvest calcium chloride sprays improving physicochemical quality of mulberries (Morus alba L. ‘Chiang Mai 60’) during refrigeration(2024-06-01); ; Ahuja, A. JunpatiwThe aim of this work was to investigate the efficiency of preharvest CaCl2 sprays on quality of ‘Chiang Mai 60’ mulberries during refrigeration. The mulberries at the stage of 40 days after anthesis were sprayed with water (control), 0.5 or 1% CaCl2. The fruits were then harvested after spraying for 5 days and refrigerated at 5°C for 6 days. The visual appearance, texture, total soluble solids (TSS) content, total acidity (TA), antioxidant activities and certain secondary metabolites of the mulberries were monitored. Both CaCl2 sprays had no effect on the visual appearance during storage. Both CaCl2 sprays enhanced fruit firmness and delayed the fruit softening during refrigeration. Both CaCl2 treatments delayed the increased TSS content and maintained the TA content. Total phenols, ascorbic acid and anthocyanin contents of the mulberries were enhanced by the CaCl2 sprays. Both CaCl2 sprays delayed the decreased antioxidant capacity and enhanced the free radical scavenging activity during the refrigeration. The efficiency of 0.5 and 1% CaCl2 preharvest sprays on improving postharvest quality of the mulberries was not different. This indicates that CaCl2 preharvest sprays improved postharvest quality of the mulberries which 0.5% CaCl2 is the suggested concentration. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Enhanced biodiesel purification using coffee husk bioadsorbents: The role of pyrolysis temperature, KOH activation, and adsorption efficiency(2025-05-01); ; ; ; Ruttanadech, NuttapongThis study evaluates the performance of bioadsorbents derived from coffee husk pyrolyzed at temperatures of 600, 700, and 800 °C (CH600, CH700, and CH800), along with activated CH700 (ACH700), in biodiesel purification. The results indicate that CH700 significantly enhances biodiesel purity, with optimal purification conditions achieved at a dosage of 2 wt% CH700, a stirring rate of 400 rpm, and a contact time of 45 min. CH700 demonstrated modest performance, achieving approximately 20 % removal of methanol and water. However, after activation with potassium hydroxide (KOH), ACH700 demonstrated improved efficiency, achieving 96.92 % methanol removal and 39.46 % water removal. ACH700 also refined biodiesel quality to meet EN14214 standards and maintained a higher biodiesel yield compared to other adsorbents. The bioadsorption process is influenced by the chemical interactions between the surface functional groups of the bioadsorbent and the contaminants, which is further enhanced by the optimized pore structure of ACH700. The use of ACH700 represents a novel and highly effective approach to biodiesel purification, combining both technical efficiency and economic feasibility. Furthermore, the valorization of agricultural waste adds significant environmental benefits, reinforcing the potential of ACH700 for large-scale biodiesel production. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Efficacy of methyl jasmonate-liposomes on 'Kluai Khai' bananas (Musa AA) quality preservation and oxidative response alleviation during room temperature storage(2025-02-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Liposome containing methyl jasmonate incorporated with vitamin B12 alleviates chilling injury of ‘Queen’ pineapples(2023-11-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effects of simultaneous cyanocobalamin and calcium gluconate treatment on chilling injury alleviation of 'Queen' pineapple by using peduncle infiltration(2020-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Impact of rainfall rate and temperature during fruit development on chilling injury of Queen pineapples (Ananas comosus L.) during cold storage(2021-10-01); In this study, we investigated the impact of rainfall rate and temperature during fruit development on chilling injury (CI) of Queen pineapples (Ananas comosus L. Merr) after cold storage at 13 °C. The pineapples were induced to flower in October 2016 and May 2017. Rainfall and field temperature during fruit development were recorded. The fruit were harvested in March 2017 and October 2017 (135 d after anthesis), respectively. Visual appearance, CI score, lightness (L*) value, parameters related to membrane integrity, and the activities of enzymes related to browning of the tissue adjacent to the core were monitored in the fruit after 7 and 14 d of cold storage followed by room temperature storage (27 ± 1 °C) (RT) for 2 d. High CI incidence was associated with high rainfall rather than the field temperature (approx. 27–29 °C) during fruit development. The fruit harvested in March experienced higher rainfall during fruit development than the fruit harvested in October. The CI severity of the fruit harvested in March was greater than that of fruit harvested in October. The higher CI severity of the fruit harvested in March was accompanied with reduced membrane integrity as well as enzymatic browning compared to the fruit harvested in October. In conclusion, high rainfall during fruit development is a major factor for CI of Queen pineapple grown in tropical zones. The results of this investigation provide insight into the causes underlying the loss of fruit quality during storage and marketing. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effects of preharvest boron, calcium sulfate treatment and postharvest calcium chloride peduncle infiltration on chilling injury alleviation of queen pineapple cv. Sawi fruit(2021-07-01); The aim of this study was to determine the incorporative effects of preharvest boron (B) or calcium sulfate (CaSO<inf>4</inf>) application and postharvest calcium chloride (CaCl<inf>2</inf>) peduncle infiltration on chilling injury (CI) alleviation of Queen pineapple during commercial cold storage (13°C). Pineapple fruits were sprayed with 0.25% B four times a month after one month of anthesis, or CaSO<inf>4</inf> (100 kg per 400 m<sup>2</sup>) was applied during fruit development. The fruits were harvested after 135 days of flower induction. Both preharvest B and treated fruits were then peduncle-infiltrated with 2% CaCl<inf>2</inf> for 3 days and stored at cold temperature (CT) for 14 days. Control fruits were not peduncle-infiltrated with CaCl<inf>2</inf>.Visual appearance of half cut fruit, CI score, the amount of fruit having CI, colour attributes, browning index (BI) value and electrolyte leakage (EL) of tissue adjacent to the core were determined after storage at CT for 7 or 14 days, followed by leaving at room temperature (RT), 28 ± 1°C, for 2 days. The results show that the incorporative application of preharvest CaSO<inf>4</inf> with CaCl<inf>2</inf> peduncle infiltration (CaSO4+CaCl2) alleviated CI, delayed decrease in lightness (L*) and chroma values, and also increased BI and total colour difference (∆E*) values during storage compared with control and the incorporative application of preharvest B with CaCl<inf>2</inf> treatment (B + CaCl<inf>2</inf>). The treatment with CaSO<inf>4</inf> + CaCl<inf>2</inf> lowered CI severity and the amount of fruit having CI when compared to B + CaCl<inf>2</inf> and control treatments, respectively. Both treatments had no effect on the hue value over the storage period. Therefore, CaSO<inf>4</inf> + CaCl<inf>2</inf> treatment is an alternative method for alleviating CI of Queen pineapples. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Methyl Jasmonate Spray Enhances Antioxidant Defense and Preserves Postharvest Quality of Marian Plum (Bouea macrophylla Griffith) During Shelf Life(2026-06-01); ;