POST-HARVEST PHYSIOLOGY AND AGING OF CUT FLOWERS

2020 ◽  
pp. 5-17
Author(s):  
N.V PILSHCHIKOVA ◽  
◽  
O.F. PANFILOVA
Keyword(s):  
Aging Process ◽  
Water Status ◽  
Hydrolytic Enzymes ◽  
Threshold Value ◽  
Limited Range ◽  
Antioxidant Systems ◽  
Cut Flowers ◽  
Water Metabolism ◽  
Leafy Shoots

The review paper discusses the problems of postharvest physiology associated with maintaining the quality of floriculture products. Petals are an excellent model system for studying the aging process and programmed death of plant cells. The authors outline achievements of molecular biology and epigenetics in studying the regulation mechanisms of aging and cell death, and state their role in the loss of the decorative qualities of flowers. The study of water metabolism, the activity of antioxidant systems, and the stability of cell membranes has shown that their changes begin in the early stages of flower development and precede visible signs of the loss of decorative qualities.Common features and differences in the aging dynamics of leaves and petals are noted. Maintaining the water status of leafy shoots is an important factor in maintaining the quality of flower products. Using the inhibitory method (STS, 1-MCP) the authors have shown that ethylene is a trigger of the aging process only in a limited range of plants. Many modern hybrids of garden cloves that are typically considered ethylene sensitive are not sensitive to ethylene. In alstroemeria, lilies,and freesia, ethylene is involved only in the final stage of flower aging and petal fall. The threshold value of the activity of hydrolytic enzymes that ensure the mobilization of proteins and lipids can be a leading factor in starting the aging mechanisms. Ethylene only increases the efficiency of using nutrients to form seeds and fruits. Research based on physiological, biochemical, and genetic approaches should provide a clearer picture of aging and its regulation. Studyig the role of ROS and antioxidant systems can be quite promising for assessing the common and different signaling pathways in different parts of a plant. 5-sulfosalicylic acid, which increases the activity of antioxidant systems, can gain its rightful place in a series of products to slow down the aging of cut flowers, especially in ethylene-insensitive species.

scholarly journals THE EFFECT OF CHEMICAL TREATMENTS ON THE QUALITY AND LIFE OF VASES IN THE CUT FLOWERS OF CARNATIONS (DIANTHUS CARYOPYLLUS L.)

2021 ◽  
Vol 10 (20) ◽  
pp. 165-171
Author(s):  
Tincuța-Marta Gocan ◽  
Ileana Andreica ◽  
Daniela-Sabina Poșta ◽  
Vasile Lazăr ◽  
Sándor Rózsa ◽  
...  
Keyword(s):  
Customer Satisfaction ◽  
Metabolic Activity ◽  
Aging Process ◽  
Cut Flowers ◽  
Silver Thiosulphate ◽  
Post Harvest ◽  
Chemical Treatments ◽  
Two Factors ◽  
Four Levels

The cut flowers are living organs, with intense metabolic activity, subjected to a rapid aging process compared to the undetached flowers from the mother plant. Improving the life of cut flowers is one of the most important factors for customer satisfaction. The effect of silver thiosulphate (STS) and commercial mixtures was studied in carnation cut flowers and kept in randomized vases according to experimental factors. Three commercial mixtures were used (Chrysal, Flower Food, Fleur̛ Rose) and for thiosulphate four levels (0 or control, 0.03, 0.06 and 0.9 mM). The interaction of the two factors studied was insignificant for most traits, including wilting percentage and vase lifespan, which may involve the application of both substances alone is sufficient to improve post-harvest quality and is not necessary to use simultaneously in the preservative solution. The results also showed that following the interaction of the two factors, treatment with 0.06 mM silver thiosulphate can be applied to improve the post-harvest quality of blossom cut flowers and commercial chemical mixtures can be successfully replaced.

scholarly journals β-Mannanase Production Using Coffee Industry Waste for Application in Soluble Coffee Processing

Biomolecules ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 227 ◽  
Author(s):  
Camila Favaro ◽  
Ilton Baraldi ◽  
Fernanda Casciatori ◽  
Cristiane Farinas
Keyword(s):  
Hydrolytic Enzymes ◽  
Packed Bed ◽  
Added Value ◽  
Industrial Processes ◽  
Enzymatic Extract ◽  
Packed Bed Bioreactor ◽  
Industry Waste ◽  
Hydrolysis Of ◽  
Soluble Coffee

Soluble coffee offers the combined benefits of high added value and practicality for its consumers. The hydrolysis of coffee polysaccharides by the biochemical route, using enzymes, is an eco-friendly and sustainable way to improve the quality of this product, while contributing to the implementation of industrial processes that have lower energy requirements and can reduce environmental impacts. This work describes the production of hydrolytic enzymes by solid-state fermentation (SSF), cultivating filamentous fungi on waste from the coffee industry, followed by their application in the hydrolysis of waste coffee polysaccharides from soluble coffee processing. Different substrate compositions were studied, an ideal microorganism was selected, and the fermentation conditions were optimized. Cultivations for enzymes production were carried out in flasks and in a packed-bed bioreactor. Higher enzyme yield was achieved in the bioreactor, due to better aeration of the substrate. The best β-mannanase production results were found for a substrate composed of a mixture of coffee waste and wheat bran (1:1 w/w), using Aspergillus niger F12. The enzymatic extract proved to be very stable for 24 h, at 50 °C, and was able to hydrolyze a considerable amount of the carbohydrates in the coffee. The addition of a commercial cellulase cocktail to the crude extract increased the hydrolysis yield by 56%. The production of β-mannanase by SSF and its application in the hydrolysis of coffee polysaccharides showed promise for improving soluble coffee processing, offering an attractive way to assist in closing the loops in the coffee industry and creating a circular economy.

scholarly journals Influence of vernalization and bulb size on the production of lily cut flowers and lily bulbs

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2399 ◽  
Author(s):  
Diogo Brito de Almeida ◽  
José Geraldo Barbosa ◽  
José Antônio Saraiva Grossi ◽  
Fernando Luiz Finger ◽  
Joice Crescencio Heidemann
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Cut Flowers ◽  
Floral Buds ◽  
Randomized Block Design ◽  
Commercial Harvest ◽  
Physiological Phenomenon ◽  
Cold Chamber ◽  
The Impact

Exposure of bulbs to cold, a physiological phenomenon called vernalization, and bulb size are important factors in the production of lily bulbs and flowers. This study aimed to verify the influence of vernalization of bulbs on flowering cut lily plants, as well as the impact of size and shape of harvest on the production and quality of flowers and bulbs. In turn, the way the stems of the plants used for cut-flower production are cropped is of higher importance for the production of new flower bulbs. In this sense, the experiment was conducted in Viçosa, MG, in a greenhouse in a randomized block design, in split splot scheme with three replications, in which the vernalization periods (25, 35 and 45 days at 4 ± 1 C) constituted the plots; bulb sizes (diameters of 3.2-3.8 cm; 2.5-3.2 cm 1.9- and 2.5 cm), subplots and ways to harvest (full harvest of the stem at the required length for the commercial harvest of the flower, commercial stem harvest at the commercial length, maintaining 10cm of stem in the soil; removal of the floral buds as soon as their appearance is observed and harvest at the end of the season), the sub subplots. The bulbs were planted in beds, with 15 x 20 cm spacing. It was evaluated the number of plants that flowered and the number of flowers, the length and the diameter of the floral buds, fresh and dry weights, diameter and plant height as well as number, perimeter and amount of fresh and dry bulbs. There was a decrease in the plant height with the increase of the vernalization period and a reduction of the diameter of the planted bulbs, as well as of the number and the fresh and dry weights of the produced buds. The production of flowers and buds in number, size and weight was directly proportional to the size of the planted bulbs, while the form of harvest with removal of flower buds increased the number, the perimeter and the fresh and dry weights of the buds. Bulbs with diameter between 3.2 - 3.8 cm, stored for 25 days in cold chamber enable greater production of flowers and the highest stem height, factors that favor the increase in market value.

The aged foot

2002 ◽  
Vol 12 (2) ◽  
pp. 175-180
Author(s):  
Gareth Evans
Keyword(s):  
Quality Of Life ◽  
Aging Process ◽  
Foot Pain ◽  
Health Related Quality ◽  
Common Cause ◽  
Key Factor ◽  
Related Quality ◽  
Health Related ◽  
Foot Problems

Foot problems are common in elderly people and healthy feet are recognized as a key factor in maintaining activity and independence. People aged over 75 years exhibit a greater degree of foot pathology than a younger population and foot pain is prevalent in a high percentage of elderly patients. Foot problems impair mobility in many older people and may also contribute to falls. The immobility that results from a local foot problem can have a significant impact on the patient’s ability to maintain life as a useful member of society and has been identified as a common cause of unreported disability, often accepted as an accompaniment of the aging process. With increasing age, many foot problems which may have been well compensated for earlier in life will begin to reduce an elderly person’s mobility and health-related quality of life.

scholarly journals Influência da vernalização de semente na produção, crescimento e desenvolvimento de plantas de lisianthus

2018 ◽  
Vol 39 (6) ◽  
pp. 2325 ◽  
Author(s):  
Maria Yumbla-Orbes ◽  
José Geraldo Barbosa ◽  
Wagner Campos Otoni ◽  
Marcel Santos Montezano ◽  
José Antônio Saraiva Grossi ◽  
...  
Keyword(s):  
Large Scale ◽  
Limiting Factor ◽  
Scale Production ◽  
Cut Flower ◽  
Cut Flowers ◽  
Flower Production ◽  
Commercial Scale ◽  
Large Scale Production ◽  
And Control

Flowering induction and control is a limiting factor when commercially producing cut flowers of lisianthus and seed exposure to low temperatures, a physiological event called vernalization, induces the differentiation of vegetative buds to reproductive buds, contributing to a flowering that is uniform and has quality. The objective of this study was to evaluate the influence of seed vernalization in three cultivars of lisianthus (Excalibur, Echo and Mariachi) for 12, 24, 36 and 48 days at temperatures of 5, 10 and 15°C, in the production and quality of buds, making this technology feasible to large-scale production. During cultivation it was observed that the lower the temperature and higher the vernalization period, the lower the cycle and the greater the number of plants induced to flowering for all three cultivars, and those are important features in the context of flower production in a commercial scale. The seeds subjected to vernalization originated plants that produce flower stems within the standards required by the market, showing that vernalization was efficient to induce flowering without affecting the quality of the buds. To produce lisianthus as a cut flower of quality, it is recommended seed vernalization of Mariachi and Echo cultivars for 24 days at 5°C and Excalibur for 36 days at 5°C.

scholarly journals Influence of virus infection in quality of production of Lilium x fomolongi as cut-flowers

2003 ◽  
Vol 9 (4) ◽  
pp. 237-241 ◽  
Author(s):  
B.N. Chung ◽  
J.A. Jung ◽  
E.J. Lee ◽  
J.S. Kim ◽  
M.I. Jeong
Keyword(s):  
Virus Infection ◽  
Cut Flowers

scholarly journals Reuse of Treated Municipal Wastewater from Constructed Wetlands for Cut Flowers Irrigation in Aeroponic Cultivation

2020 ◽  
Vol 24 ◽  
Author(s):  
Ismael Leonardo Vera-Puerto ◽  
Jorge Leonardo Olave-Vera ◽  
Sussy Tapia ◽  
Wladimir Antonio Chávez ◽  
Carlos Arias
Keyword(s):  
Constructed Wetlands ◽  
Municipal Wastewater ◽  
Cut Flower ◽  
Cut Flowers ◽  
Cultivation System ◽  
Cultivation Systems ◽  
Arid Conditions ◽  
Affected Plant ◽  
Treated Municipal Wastewater

The aim of this work is to evaluate the reuse of municipal wastewaters treated through subsurface constructed wetlands (SS-CWs) as irrigation water in cut flower aeroponic cultivation under arid conditions. For this purpose, two experimental aeroponic cultivation systems were installed with the cut flower Lilium ‘Tresor’ planted and irrigated with SS-CWs treated water. The results showed that the quality of the SS-CWs wastewater has to be improved to be used in irrigation. Despite that, Lilium ‘Tresor’ grew under arid conditions with normal stem diameters and number of flowers but with heights under 0.65 m, which would restrict their commercialization to local markets. Water electrical conductivity (> 2300 µs/cm) and luminosity (> 120 klux) were factors that affected plant height. When compared to other cultivation systems, the aeroponic cultivation system used between 10 % and 20 % of the amount of water needed to produce Lilium ‘Tresor.’ Thus, this work showed the feasibility to produce cut flowers using an aeroponic cultivation system under arid conditions and irrigated with SS-CWs effluents. Likewise, it was detected that improvements to water quality and luminosity must be made for industrial scaling.

scholarly journals The work market awake for aged people

2007 ◽  
Vol 2 (1) ◽  
pp. 43-50
Author(s):  
Ana Maya Goto Uyehara
Keyword(s):  
Old Age ◽  
Aging Process ◽  
Point Of View ◽  
Professional Life ◽  
The Other ◽  
Job Market ◽  
Aged People ◽  
Current Concerns ◽  
Life Projects

At the end of XX century, the old age theme has been approached due to concern of the society with the quality of man’s life in the aging process and the fact of seniors correspond to a growing representative portion of the population in the quantitative point of view. So the aging changes in a problem that wins expressiveness and legitimacy in the field of the daily current concerns. This article intends to demonstrate that the work can articulate other life projects for the seniors and to avoid psychic pathologies in the old age that can appear due to the loss of personal identity, to the involvement lack in motivated activities or starting from the adoption of inadequate consumption ways or lifestyles. For this, this article assumes a line of preventive character explanation under two slopes: the first refers to the fact that, if the work ennobles the man, he must acquire or improve this individual competences, adapting them to the new demands of the job market to get a job, or even to reactivate his professional life because new life projects. The second slope follows the direction of the discovery of the seniors’ potentialities for the companies, which can adapt the qualities [and limitations] of this workers category to the various functions in the organization. The Brazilian entrepreneur needs to be attentive to the image of his company and the differential competitive that can distinguish it of the other companies. And this can be to employee senior people or to maintenance it in the company personnel staff.

GUARANTEED RESULT IN GROUP APPROACH GAME PROBLEMS OF CONTROLLED OBJECTS

2021 ◽  
Vol 5 ◽  
pp. 57-71
Author(s):  
Arkady Chikriі ◽  
◽  
Iosif Rappoport ◽  
◽  
Keyword(s):  
Sufficient Conditions ◽  
Threshold Value ◽  
Multivalued Mappings ◽  
Main Principle ◽  
Group Approach ◽  
Modern Technique ◽  
Pontryagin Condition

The problem of a guaranteed result in game problems of group approach of controlled objects is considered. A method for solving such problems is proposed, which is associated with the construction of some scalar functions that qualitatively characterize the progress of the approach of a group of controlled objects and the efficiency of the decisions made. Such functions are called resolving functions. The attractiveness of the method of resolving functions lies in the fact that it makes it possible to use effectively the modern technique of multivalued mappings and their selection in substantiating game constructions and obtaining meaningful results on their basis. In any form of the method of resolving functions, the main principle is the accumulative principle, which is used in the current summation of the resolving functions to assess the quality of the game of the group approach until a certain threshold value is reached. In contrast to the main scheme of the mentioned method, the case is considered when the classical Pontryagin condition does not hold. In this situation, instead of Pontryagin’s selection, which do not exist, some shift functions are considered and, with their help, special multivalued mappings are introduced. They generate upper and lower resolving functions with the help of which sufficient conditions for the completion of the game of group approach in a certain guaranteed time are formulated. Comparison of guaranteed times for different schemes of group approach of controlled objects is given.

The Canvas Model as a Strategy for Improving Financial Profits: A Casey Study of Online Businesses in Indonesia

2017 ◽  
Vol 2 (4) ◽  
pp. 40-44
Author(s):  
Francisca Hermawan ◽  
Sri Hapsari Wijayanti ◽  
Fransiskus X Lara Aba
Keyword(s):  
Business Strategy ◽  
Sampling Technique ◽  
Jel Classification ◽  
Climatic Conditions ◽  
Primary Data ◽  
Selling Price ◽  
Cut Flowers ◽  
Online Business ◽  
Potential Customers

Objective - The aim of this study is to identify how the strategy of online businesses can be improved to increase financial profits. The focus of this study is on online businesses selling flowers, taking into consideration the fact that the freshness of flowers does not last long, and that the price and quality of flowers fluctuates depending on climatic conditions. Methodology/Technique - The data used in this research is primary data, obtained by distributing questionnaires for market research, tested against 57 respondents. The respondents were selected using non-probability sampling with a purposive sampling technique. The results of the validation test r count > r table, with 5% significance, shows that businesses providing flower arrangements are in high demand. Findings - The results of the model business identification canvas and the profit and loss projections indicate that the choice of the business strategy series for cut flowers on each element is accurate. The results of the analysis of the strengths and threats also identifies that selling price varies depending on the types of flowers used in an arrangement, and accessories used. Novelty - This research studies how the types of flowers used, the design of an arrangement, accessories used, packaging, and family ownership of a business can effect the interest of potential customers in the Fiore shop in Afrodite. Type of Paper: Empirical. Keywords: SWOT; Canvas Models; Communication; Online Business; Indonesia. JEL Classification: C50, C53, C59.

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