scholarly journals Postharvest quality of essential oil treated roses

2017 ◽  
Vol 23 (2) ◽  
pp. 192 ◽  
Author(s):  
Guilherme Mariano Manfredini ◽  
Patrícia Duarte de Oliveira Paiva ◽  
Elka Fabiana Aparecida Almeida ◽  
Ângela Maria Pereira Do Nascimento ◽  
Thaís Silva Sales ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Cold Storage ◽  
Production Costs ◽  
Postharvest Quality ◽  
Vase Life ◽  
Pot Life ◽  
Low Toxicity ◽  
Flower Quality ◽  
Cold Chamber

The loss of commercial quality during storage and transportation of roses is one of the factors that reflect on production costs, leading producers to preventively apply harmful chemicals, mainly to hamper Botrytis cinerea development and reduce further losses. An alternative to increase flower longevity without contaminating the environment with harmful chemicals is the use of natural products, such as essential oils, which have fungistatic and insecticide properties, as well as low toxicity. The objective of this study was to evaluate the effect of essential oils on the vase life of Rosa cv. Avalanche: 12 treatments were tested, resulting from the combination of 5 types of essential oils plus the control in two cold storage periods (2 to 6 days) at 1 °C, 90-95% RH. The essential oils tested were eucalyptus, cinnamon, lemongrass and peppermint (1%), clove (0.1%), plus a control with distilled water. Application was made by spraying the flower buds. After storage at low temperatures, the flower stems were kept in a room (16 °C, 70% RH) during 10 days for evaluation. Flower stems stored for 2 days in a cold chamber showed better means for darkening, turgor and bent neck, as well as a lower weight loss by the stems. The application of lemongrass essential oil at 1% caused burns on the petals, compromising quality and pot life. The essential oils of peppermint and eucalyptus allowed flower quality maintenance until the 10th day of evaluation. It is possible to conclude that post-harvest spraying with peppermint or eucalyptus essential oil at 1%, combined with cold storage for 2 days, provided greater longevity and quality for cv. Avalanche roses.

scholarly journals Benzyladenine and Gibberellins Improve Postharvest Quality of Cut Asiatic and Oriental Lilies

HortScience ◽  
2001 ◽  
Vol 36 (4) ◽  
pp. 741-745 ◽  
Author(s):  
Susan S. Han
Keyword(s):  
Growth Regulators ◽  
Cold Storage ◽  
Postharvest Quality ◽  
Vase Life ◽  
Practical Applications ◽  
Fluorescent Lamps ◽  
Leaf Yellowing ◽  
Flower Quality ◽  
Pulsed Treatment

The effects of the duration of cold storage, as well as the concentration, timing, and means of application of a solution containing 25 mg·L-1 each of benzyladenine (BA) and gibberellins (GA4+7) on the postharvest quality of cut Asiatic and Oriental lilies (Lilium sp.) were evaluated. Depending on the cultivar, lower leaves began to turn yellow between 1 and 2 weeks after placing non-cold-stored stems in a 20 °C room illuminated 12 h·d-1 with 8 μmol·m-2·s-1 from cool-white fluorescent lamps. Leaf yellowing continued to progress upward until the end of the vase life. Cold storage (3.3 °C) worsened the leaf disorder, particularly, on the Oriental lily `Stargazer'. The longer the duration of cold storage, the earlier the development of leaf yellowing and the higher the percentage of leaves that were chlorotic. In addition, cold storage induced bud blasting, inhibited flowers from fully opening, and reduced the longevity and fresh weight of open flowers and the vase life of cut stems. Spraying leaves with a solution containing 25 mg·L-1 each of BA and GA4+7 significantly reduced cold-storage-induced leaf yellowing, bud blasting, and vase life of three of the four cultivars tested. The development of leaf yellowing declined with increasing concentration of BA+GA4+7. The susceptibility of `Stargazer' to cold-storage-induced leaf yellowing and bud blasting can be counteracted by a concentration of growth regulators higher than that which was effective for the other cultivars. Timing of the BA+GA4+7 application was not critical, as there were no differences in leaf yellowing or bud development when the solution was sprayed before or after the cold storage. Addition of BA+GA4+7 (0.5 or 2.5 mg·L-1 of each) to the preservative solution or a pulsed treatment in solutions containing 25 mg·L-1 each of BA and GA4+7 for 4 hours prevented leaf yellowing, but increased bud blasting. For practical applications, growth regulators can be sprayed prior to or after cold storage in order to improve the postharvest leaf and flower quality of cut lilies.

scholarly journals Host–Guest Inclusion Complexes of Essential Oils with Strong Antibacterial and Antifungal Features in Beta-Cyclodextrin for Solid-State Pharmaceutical Applications

2021 ◽  
Vol 11 (14) ◽  
pp. 6597
Author(s):  
Aldo Arrais ◽  
Marta Manzoni ◽  
Alessia Cattaneo ◽  
Valentina Gianotti ◽  
Nadia Massa ◽  
...  
Keyword(s):  
Solid State ◽  
Essential Oil ◽  
Essential Oils ◽  
Inclusion Complexes ◽  
Production Costs ◽  
Good Tolerance ◽  
Actual Application ◽  
Beta Cyclodextrin ◽  
Ft Ir ◽  
Antibacterial And Antifungal

Essential oils are widely recognized as natural alternatives to pharmaceutical antibacterial and antifungal agents. With respect to standard pharmaceutics, the advantages of essential oils are their (i) low production costs, (ii) lack of chemical and biochemical drawbacks that are intrinsic to the synthetic production process and (iii) good tolerance by humans. On the other hand, the liquid nature of essential oils poses concerns about their actual application in different therapeutic issues regarding their persistence and the ability to control or prolong drug release. In this study, two essential oils from oregano and winter savory showing antibacterial and antifungal features were complexed in a solid state with beta-cyclodextrin. Host–guest inclusion complexes were characterized using FT-IR spectroscopy, ESI-MS and GC-MS techniques. Manyfold terpenic and non-terpenic components of the oils could be observed and unambiguously identified as being included inside the carbohydrate hosts. Many of them provided a specific biocidal action. Indeed, essential oil host–guest inclusion products were tested against two Candida species and an S. aureus reference strain, showing that the oils effectively maintained their liquid performances. Solid-state tablets of the essential oil inclusion complexes embedded in polyvinylpyrrolidone could be obtained. These results pave the way for the solid-state application of essential oils in antibacterial and antifungal pharmaceutical treatments.

scholarly journals Gibberellin4+7, Benzyladenine, and Supplemental Light Improve Postharvest Leaf and Flower Quality of Cold-stored `Stargazer' Hybrid Lilies

1998 ◽  
Vol 123 (4) ◽  
pp. 563-568 ◽  
Author(s):  
Anil P. Ranwala ◽  
William B. Miller
Keyword(s):  
Cold Storage ◽  
Storage Temperature ◽  
Postharvest Quality ◽  
Flower Longevity ◽  
Flower Bud ◽  
Leaf Injury ◽  
Leaf Chlorosis ◽  
Bud Opening ◽  
Flower Quality

Experiments were conducted to evaluate storage temperature, storage irradiance and prestorage foliar sprays of gibberellin, cytokinin or both on postharvest quality of Oriental hybrid lilies (Lilium sp. `Stargazer'). Cold storage of puffy bud stage plants at 4, 7, or 10 °C in dark for 2 weeks induced leaf chlorosis within 4 days in a simulated consumer environment, and resulted in 60% leaf chlorosis and 40% leaf abscission by 20 days. Cold storage also reduced the duration to flower bud opening (days from the end of cold storage till the last flower bud opened), inflorescence and flower longevity, and increased flower bud abortion. Storage at 1 °C resulted in severe leaf injury and 100% bud abortion. Providing light up to 40 μmol·m-2·s-1 during cold storage at 4 °C significantly delayed leaf chlorosis and abscission and increased the duration of flower bud opening, inflorescence and flower longevity, and reduced bud abortion. Application of hormone sprays before cold storage affected leaf and flower quality. ProVide (100 mg·L-1 GA4+7) and Promalin (100 mg·L-1 each GA4+7 and benzyladenine (BA)) effectively prevented leaf chlorosis and abscission at 4 °C while ProGibb (100 mg·L-1 GA3) and ABG-3062 (100 mg·L-1 BA) did not. Accel (10 mg·L-1 GA4+7 and 100 mg·L-1 BA) showed intermediate effects on leaf chlorosis. Flower longevity was increased and bud abortion was prevented by all hormone formulations except ProGibb. The combination of light (40 μmol·m-2·s-1) and Promalin (100 mg·L-1 each GA4+7 and BA) completely prevented cold storage induced leaf chlorosis and abscission.

scholarly journals Application of Essential Oils from Galanga Rhizome in Edible Coating Carrageenan as Antibacterial on Tilapia Fishball

2017 ◽  
Vol 20 (2) ◽  
pp. 380
Author(s):  
Fajar Bayu Senoaji ◽  
Tri Winarni Agustini ◽  
Lukita Purnamayati
Keyword(s):  
Essential Oil ◽  
Moisture Content ◽  
Essential Oils ◽  
Shelf Life ◽  
Cold Storage ◽  
Food Product ◽  
Gel Strength ◽  
Edible Coating ◽  
Control Treatment ◽  
Parametric Data

Fish ball is a perishable food product. One of an alternative method which could be applied to delay the deterioration process was using carrageenan edible coating with the addition of galangal rhizome’s essential oil as an antibacterial agent. The aim of this study was to find out whether the addition of carrageenan edible coating with galangal rhizome’s essential oil could increase the shelf life of the tilapia fish ball during cold storage or not. This study was used experimental laboratories with the completely randomized design used factorial (2x6) two factors include essential oils concentrations (0%, dan 1%) and storage time (0, 3, 6, 9, 12, 15) with three repetitions. The shelf life of the fish ball observed by sensory, TPC, TVBN, pH, Aw, moisture content, and gel strength test. The parametric data were analyzed by the ANOVA, while the non-parametric was using the Kruskal Wallis test. As the result, the fish ball with the 1% treatment was still acceptable until 15 days of storage compared with the control which only lasts for 9 days. The other results were the sensory test was 6.63≤π≤6.95, TPC value was 1.07x105 cfu/g, TVBN value was 30.33±1.68 mgN%, the moisture content was 61.38%±0.47, the Aw was 0.89±0.006, the pH was 6.24±0.0, and the gel strength was 721.19±1.61 g.cm. The treatment of 1% essential oil addition to carrageenan edible coating was significantly different (p&lt;0.05) compared to the control treatment during cold storage to the characteristic of tilapia fish ball. <br /><br />

scholarly journals Postharvest longevity of 'BRS Vitória' seedless grapes subjected to cold storage and acibenzolar-S-methyl application

2018 ◽  
Vol 53 (7) ◽  
pp. 809-814 ◽  
Author(s):  
Ronan Carlos Colombo ◽  
Reginaldo Teodoro de Souza ◽  
Maria Aparecida da Cruz ◽  
Deived Uilian de Carvalho ◽  
Renata Koyama ◽  
...  
Keyword(s):  
Shelf Life ◽  
Cold Storage ◽  
Storage Period ◽  
Physicochemical Characteristics ◽  
Gray Mold ◽  
Physicochemical Analysis ◽  
Postharvest Quality ◽  
Randomized Design ◽  
Postharvest Longevity ◽  
Cold Chamber

Abstract: The objective of this work was to evaluate cold storage periods and postharvest longevity of the seedless table grape 'BRS Vitória' subjected to the application of the disease-resistance inducer acibenzolar-S-methyl (ASM). Bunches were treated or not with 1% ASM, placed individually in plastic clamshell trays and stored in a cold chamber at 2±1ºC, at a high relative humidity, for three periods (30, 45, and 60 days), followed by a 5-day period of shelf life in plastic clamshells, at 22±2ºC. After each storage period, gray mold (Botrytis cinerea) incidence was evaluated, and the physicochemical analysis was performed. A completely randomized design, with four replicates, was used in two 2x3 factorial arrangements: one evaluating ASM application and cold storage periods; and another, ASM and cold storage + shelf-life periods. ASM did not change the physicochemical characteristics of the bunches, and the incidence of gray mold was lower than 1% in all treatments. Water loss from bunches increased with storage periods. Even without ASM application, 'BRS Vitória' grape can preserve its postharvest quality for up to 60 days of cold storage, plus five days of shelf life in plastic clamshells.

scholarly journals Application of Essential Oils for Maintaining Postharvest Quality of ‘Rongrien’ Rambutan Fruit

Agriculture ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1204
Author(s):  
Nittaya Ummarat ◽  
Kanogwan Seraypheap
Keyword(s):  
Weight Loss ◽  
Essential Oil ◽  
Essential Oils ◽  
Fruit Quality ◽  
Postharvest Quality ◽  
Edible Coatings ◽  
Nephelium Lappaceum ◽  
Fruit Pericarp

The postharvest quality of rambutan fruits (Nephelium lappaceum Linn.) is mainly influenced by dehydration, which causes browning of the peel and spinterns. This research investigated the effects of some essential oils—from citronella, clove, kaffir lime, and lemongrass—on ‘Rongrien’ rambutan fruit quality during storage at 13 °C. Screening of effective concentrations from 0.01 to 0.16% was conducted for each essential oil. The results showed that, of the essential oil treatments tested, a kaffir lime oil coating of 0.01% could best maintain the quality of fruits, reducing both weight loss and browning of the peel and spinterns. However, essential oil concentrations exceeding 0.04% severely damaged the fruit pericarp, in which scores of spintern browning were higher than those of peel browning. These results suggest that kaffir lime oil can maintain the postharvest quality of ‘Rongrien’ rambutan fruit as a supplement in some edible coatings.

scholarly journals Eucalyptus globulus essential oil on the postharvest quality of ‘Carola’ roses

2020 ◽  
Vol 26 (2) ◽  
pp. 159-165
Author(s):  
Elka Fabiana Aparecida Almeida ◽  
Leandra Oliveira Santos ◽  
Ariane Castricini ◽  
João Batista Ribeiro da Silva Reis
Keyword(s):  
Essential Oil ◽  
Eucalyptus Globulus ◽  
Experimental Period ◽  
Fresh Mass ◽  
Postharvest Quality ◽  
Vase Life ◽  
Anthocyanin Content ◽  
Total Anthocyanin ◽  
Eucalyptus Essential Oil

Abstract The consumer market has been demanding quality plant products, without any contamination or chemical residues, restricting their use in postharvest. As a result, is necessary increase the development of research seeking more sustainable and economic alternatives. The objective was to identify the ideal concentration of eucalyptus essential oil to maintain postharvest quality of ‘Carola’ roses. At laboratory, stems of the ‘Carola’ roses were standardized at 35 cm, labeled and subjected to the following doses of eucalyptus (Eucalyptus globulus) essential oil: 0.25%; 0.5%; 0.75%; 1.0% and 1.25%. Spraying with distilled water was used as a control. The experiment was conducted in a completely randomized design, in a factorial scheme consisting of two factors: six postharvest treatments and seven evaluation dates (0, 1, 2, 3, 4, 5, 6 and 7 days). Four replications were used, with two flowers each. Stems fresh mass and color of the petals were analyzed daily. In addition, the visual quality was also evaluated. The total anthocyanin content in the petals was evaluated every three days at the beginning, middle and end of the experimental period. Eucalyptus essential oil in all doses tested provided better maintenance on the postharvest quality of roses: 0.25% and 0.5% (better grades), 1.0% and 1.25% (lower hue angle) and 0.25% (higher anthocyanin content). On the 5th day, the flower stems lost 16% of fresh mass, without signs of wilting and the assigned scores also indicated that the stems remained fit for commercialization until the fifth day (total vase life). In conclusion, eucalyptus essential oil at doses 0.25%, 0.50%, 1.0% and 1.25% is effective in maintaining the quality of ‘Carola’ roses for up to five days at 25 °C.

A review on bioactive constituents of essential oils as mosquito repellent

2021 ◽  
Vol 18 ◽  
Author(s):  
Rajat Subhra Dutta ◽  
Supriya Sahu ◽  
Bhaskar Mazumder
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Mosquito Species ◽  
Underlying Mechanism ◽  
Mosquito Repellent ◽  
Bioactive Constituents ◽  
Suitable Alternative ◽  
Mosquito Repellents ◽  
Low Toxicity ◽  
The Stability

Abstract: Currently, the research focus has been on finding new alternatives to synthetic mosquito repellents due to their toxicity. Natural products act as a suitable alternative since plant-based mosquito repellents have been used traditionally due to their low toxicity. Essential oils as mosquito repellent have gained importance due to various functional bioactive constituents. Different formulations of essential oils have been studied from time to time to enhance the stability and protection time. However, the underlying mechanism of repellent activity of the bioactive constituents against specific mosquito species remains unexplored. This review focuses on the various sources of essential oil with their bioactive components and their receptor-based mechanism of action for inducing mosquito repellency against different mosquito species. Furthermore, a comparison of the various formulations of essential oil-based mosquito repellents with synthetic repellents has been discussed.

scholarly journals Storage and methyl jasmonate in postharvest conservation of roses cv. Avalanche

2017 ◽  
Vol 23 (2) ◽  
pp. 207 ◽  
Author(s):  
Guilherme Mariano Manfredini ◽  
Patrícia Duarte de Oliveira Paiva ◽  
Elka Fabiana Aparecida Almeida ◽  
Michele Valquíria Dos Reis ◽  
Mariane Oliveira Maia
Keyword(s):  
Methyl Jasmonate ◽  
Low Temperatures ◽  
Storage Time ◽  
Postharvest Quality ◽  
Vase Life ◽  
Cut Flowers ◽  
Fresh Weight ◽  
Flower Buds ◽  
Cold Chamber

The use of methyl jasmonate has demonstrated its efficiency to extend the vase life of cut flowers. The objective of this study was to evaluate the effect of methyl jasmonate associated with storage at low temperatures on the postharvest quality of Rosa cv. Avalanche stems. The treatments consisted of 125, 250, 500 and 1000 μM of methyl jasmonate, besides the control with distilled water. The flower buds were sprayed with 4 mL of the solution, according to the treatments, and then kept in a cold chamber (1 °C) for periods of 2 and 6 days. Subsequently, the stems were taken to the postharvest laboratory at a temperature of 16 °C. Better quality, higher fresh weight and water absorption were observed in flower stems stored for 2 days. The application of methyl jasmonate caused less turgescence and greater darkening of roses. It was possible to conclude that two days is the best storage time at 1 °C and the use of methyl jasmonate does not maintain the quality of roses cv. Avalanche after harvest.

scholarly journals Postharvest Control of Botrytis cinerea Infections on Cut Roses Using Fungistatic Storage Atmospheres

1990 ◽  
Vol 115 (1) ◽  
pp. 102-107 ◽  
Author(s):  
Philip E. Hammer ◽  
S.F. Yang ◽  
M.S. Reid ◽  
J.J. Marois
Keyword(s):  
Weight Gain ◽  
Botrytis Cinerea ◽  
Disease Severity ◽  
Cold Storage ◽  
Gold Rush ◽  
Vase Life ◽  
Flower Quality ◽  
Postharvest Control ◽  
Cut Rose ◽  
Quality Weight

The effectiveness of fungistatic atmospheres for postharvest control of Botrytis cinerea Pers. infections on cut rose flowers (Rosa hybrids L.) was investigated. Storing cut `Sonia', `Royalty', and `Gold Rush' roses at 2.5C with 10% CO2 for 5 days, followed by 2 days of cold storage in air, reduced the number of B. cinerea lesions that developed on inoculated and noninoculated flower petals by 77% and 82%, respectively, compared to cold storage for 7 days in air. Higher CO2 concentrations and longer CO2 treatment times reduced disease severity further, but resulted in unacceptable leaf discoloration on some cultivars. No deleterious effects of CO2-enriched storage atmospheres on flower quality, weight gain, or vase life were observed. Storage at 2.5C for 7 days in 2 μl SO2/liter reduced B. cinerea infections on inoculated and noninoculated flowers by 53% and 43%, respectively. No deleterious effects on flower quality, weight gain, or vase life were observed. Higher SO2 levels reduced disease severity further, but caused bleaching of the petal margins and necrosis around leaf wounds.

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