Plant Productions

Investigating the effects of post-harvest application of nanocellulose/carvacrol composite coating on the physico-chemical characteristics of Physalis fruit with calyx

Leila Fereidoni; Abdollah Ehtesham Nia; Hassan mumivand; Mohamadrez Raji

Articles in Press, Accepted Manuscript, Available Online from 10 July 2023

https://doi.org/10.22055/ppd.2023.42926.2078

Abstract

IntroductionPhysalis (Physalis peruviana L.) belongs to the Solanaceae family and Its fruit is berry, round and orange in color. This fruit is climacteric and after reaching physiological ... Read More IntroductionPhysalis (Physalis peruviana L.) belongs to the Solanaceae family and Its fruit is berry, round and orange in color. This fruit is climacteric and after reaching physiological maturity, it can be harvested as a mature green. Since small fruits are consumed fresh and also because of their sensitivity to spoilage pathogens, physiological disorders. On the other hand, food safety is one of the important issues related to fresh fruits and vegetables. Most of the natural compounds are degradable and can be a safe compound for human health and the environment and an alternative to synthetic compounds. Research has shown that the incorporation of bioactive compounds such as essential oils, plant extracts and nanocomposite increases the active effect as a packaging for fruit and reduces the rate of fruit deterioration.Materials and MethodsThis research was done in the laboratory of Lorestan university (Khorramabad, 33° 26 ´N latitude and 48 °15´E longitude and at an altitude of 1148 meters above sea level). In this study, physalis fruits from Khorramabad research greenhouse, nanocellulose gel extracted from Bergan conifer pulp from Nano Novin Polymer Company, pure carvacrol by GC/MS analysis from Khorrman Pharmaceutical Company and the combination of nanocellulose with carvacrol, in The laboratory was prepared. The experiment was conducted as a factorial with two factors in the form of a complete random design with 4 replications. The first factor is the type of material in specific concentrations at nine levels (Control, Car 0.3%, Car 0.6%, CNF 0.5%, CNF 1.5%, Car 0.3+CNF 0.5%, Car 0.6+CNF 0.5%, Car 0.3+CNF 1.5%, Car 0.6+CNF 1.5% and the second factor of storage time at four levels (0, 45, 90 and 135 days). First, physalis fruits were washed with distilled water, and then the excess leaves and damaged fruits were separated. The fruits were placed in the desired suspension for 2-3 minutes. After applying the treatment, the fruits were placed in a refrigerator with a temperature of 4 degrees and a relative humidity of 90%.Results and DiscussionThe results showed that the treated fruits with nanocellulose and carvacrol showed less weight loss and had higher tissue firmness. Examining the biochemical characteristics also showed the positive effect of the treatments on the desired parameters, so that the most TA and vitamin C and the least amount of acidity were obtained in the nanocellulose and nanocellulose/carvacrol combination treatments. Also, the treatments used reduced the TSS and the fruit TSS/TA, and the combined treatments had the lowest values. By creating a layer on the surface of the fruit, nanocellulose coating prevents water evaporation and reduces metabolic and respiration processes. The amount of fruit softening is directly related to the amount of decomposition of pectin compounds through the enzyme activity of methylesterase and polygalactronase during ripening. The used coatings form a thin layer on the surface of the fruit, which can reduce gas exchange and the rate of respiration. Nanocellulose/carvacrol composite coatings lead to an increase in the activity of cytochrome oxidase by reducing internal oxygen and this enzyme increases the rate of ascorbic acid decomposition. ConclusionIn general, the results of the research showed that the investigated characteristics of physalis fruit were influenced by the treatments used. As treated samples, weight loss was less, acidity, soluble solids and taste index were lower, tissue firmness, titratable acids and vitamin C were higher. According to the general results, it can be stated that the application of nanocellulose/carvacrol composite treatments, especially the Car 0.6+CNF 1.5% treatment, showed more favorable results than the application of each one alone in most features.

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Evaluation of Some Chrysanthemum Cultivars Using Morphological Traits in Beiran-Shahr, Lorestan Province

Shirin Taghipour; Abdollah Ehteshamnia; Hamed Khodayari; Hassan Mumivand

Volume 42, Issue 1 , April 2019, , Pages 47-62

https://doi.org/10.22055/ppd.2019.22802.1496

Abstract

Abstract Background and Objectives Chrysanthemum, due to numerous applications in floriculture and medicinal industries has been considered one of the most important ornamental ... Read More Abstract Background and Objectives Chrysanthemum, due to numerous applications in floriculture and medicinal industries has been considered one of the most important ornamental plants and medicinal plants in the global area. In addition to being used as a cut flower, it also has a special place among potted flowers and gardens. Also, it is used as a medicinal plant with strong healing properties in traditional Chinese medicine and considered to treat eye diseases, headaches, colds, and etc. However, only a few reports have been presented in the field of genetic diversity of Chrysanthemums by morphological and molecular markers. Therefore, there is a need for further identification of germplasm and cultivars of Chrysanthemums in Iran. This study aimed to assess the genetic diversity of 15 cultivars of Chrysanthemums based on morphological characteristics and selection of cultivar adapted to Khorramabad region. Materials and Methods This experiment was carried out in a randomized complete block design with three replications in the area of Beiran-Shahr, Lorestan province in 2017. Twenty-one morphological characteristics were determined from fresh materials. These traits in accordance with the given instructions describing World UPOV Chrysanthemums, were measured. Quantitative measurements were carried out on 10 leaves per cultivars. Some variables including diameter (branches, petioles, discs, buds and flowers) were measured by digital caliper. The traits such as length and width of leaf, plant height, length and width of the tab florets with ruler were measured. Results Based on data analysis most of the traits in cultivars showed significant differences (p≤0.01). Results showed that the correlation between leaf area with leaf width, petiole diameter and number of leaves has a positive and significant correlation with the probability level of 5%. The most significant and negative correlation (r = 0.99) was observed between number of flowers per plant and number of florets. Based on the results obtained from principal components analysis, seven independent and major components with Eigen values greater than one could explain 89 percent of the total variation. The first component, verified 24.4 percent of the total variation. Cluster analysis of cultivars in Euclidean distance of 26.68, was categorized into two main groups. The cultivars "Avadis" and "Norooz3" in the first group were distinguished from the rest of the cultivars with the lowest height. The "Fariba"; "Ashraf" and "Andiea" cultivars were placed in the group and most abundant cultivars. Discussion Based on the results, leaf size, plant height, number of branches and number of flowers in plant traits were most important in recognizing the diversity of cultivars Chrysanthemum. By using some cultivars belonging to the first cluster with less height and cultivars in the second cluster with more leaves and flowers as a parent, a new cycle of Chrysanthemum breeding program can be initiated.

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Author = Hassan Mumivand

Investigating the effects of post-harvest application of nanocellulose/carvacrol composite coating on the physico-chemical characteristics of Physalis fruit with calyx

Abstract

Evaluation of Some Chrysanthemum Cultivars Using Morphological Traits in Beiran-Shahr, Lorestan Province

Abstract