Marolo (Annona crassiflora Mart.): a study of value chain and processing

Corrêa, Síntia Carla; Rezende, Marcelo Lacerda; Ferreira, Eric Batista; Azevedo, Luciana

doi:10.1590/s0101-20612013005000044

Cited by 6 publications

(6 citation statements)

References 13 publications

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“…The world is presently over-dependent on a few plant species (Correa et al. 2013 ). Diversification of production and consumption habits to include a broader range of plant species, particularly those currently identified as under-utilized, could significantly contribute to improve health and nutrition, livelihoods and ecological sustainability.…”

Section: Introductionmentioning

confidence: 99%

Antioxidant and antimicrobial activities of ethanol and aqueous extracts from Urtica urens

Mzid

Khedir

Salem

et al. 2017

Pharmaceutical Biology

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Context: Urtica urens L. (Urticaceae) is an important and commonly used plant for its medicinal and pharmacological properties. Objective: We analyzed the antioxidant and antimicrobial activities of the leaves of Urtica urens in ethanol (EtOH) and water (WA) solvents, employing standard analytical methods. Materials and methods: Polyphenol, flavonoid and tannin content of Urtica urens leaves were determined, after their extraction, using EtOH (70%) and WA extracts as well as the antioxidant (DPPH, ABTS, β-carotene and FRAP) and the antibacterial (via the method of dilution tests) activities of EtOH and WA extracts. Results: The 70% EtOH of Urtica urens showed the highest values of total phenolic (31.41 mg GAE/g DW), flavonoids (6.81 mg quercetin/g DW), tannin (8.29 mg GAE/g DW) and TEAC (560 mmol Trolox/g DW), compared to the WA. The results of DPPH for EtOH (95.56%) were higher than that of WA (64.56%) at a concentration of 40 mg/L. The extracts displayed a FRAP 106.23 for EtOH and 30.55 μmol Fe(II)/g DW for WA. The results clearly indicated that EtOH was the strongest radical scavenger (IC50 = 245.65 ± 10.2 μg/mL). Ethanol was the most effective with minimum inhibitory concentration (MIC) < 250 μg/mL. WA has no antibacterial activity. Discussion and conclusion: The results indicate that leaves of Urtica urens could be used as natural antioxidant and antimicrobial agents.

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Section: Introductionmentioning

confidence: 99%

Antioxidant and antimicrobial activities of ethanol and aqueous extracts from Urtica urens

Mzid

Khedir

Salem

et al. 2017

Pharmaceutical Biology

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“…That is, to achieve differentiation and innovation strategies for its products, to achieve sustainable competitive advantages. It is clear that the study of agrifood VCs seeks the socio-economic improvement of the population 28 , in fact, comparing with traditional production systems, VCs allows a better structure, interrelating the links of the productive chain, thus improving the information flow 20,24,31,32 , to more effectively meet the needs of consumers 32 , maximizing profits through increases in the added value of products 33 . However, the present research emphasizes the importance of the producer in the VC of vegetables, production is the fundamental factor that affects consumer satisfaction 27 , consequently, to improve the functioning of VC in agricultural systems should raise production levels and increase yields per area 2 .…”

Section: Discussionmentioning

confidence: 99%

La cadena de valor de hortalizas: consideraciones para el desarrollo local a partir del productor

Blanco-Capia

2021

J. Selva Andina Biosph.

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The value chain approach, implemented in agricultural production systems, generates an increase in value for production and consequently local economic development, however, this transformation in agriculture implies an interrelation between its actors. In the present study, the value chain (VC) in the producer link was analyzed, this will allow to critically review the producer's scenario and the characteristics of participants in the VC of the agricultural production system, seeking local development, because of the innovation in the production system and necessary in the recovery process from the producer. The results infer that the source of problems in the functioning of the structure, among others, is the ineffectiveness in the interrelation of the links in the VC, the producer faces a scenario with many weaknesses and threats.2021. Journal of the Selva Andina Biosphere ® . Bolivia. All rights reserved.

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“…Combustors based on lean premixed flames generate substantially lower NOx emissions than equivalent nonpremixed or stoichiometric premixed systems [1]. For that reason, there has been considerable recent interest in the development of fuel-flexible premixed turbine combustors that are capable of burning lean hydrogen or hydrogen-enriched lean hydrocarbon fuels (e.g., [2][3][4][5]).…”

Section: Introductionmentioning

confidence: 99%

“…For that reason, there has been considerable recent interest in the development of fuel-flexible premixed turbine combustors that are capable of burning lean hydrogen or hydrogen-enriched lean hydrocarbon fuels (e.g., [2][3][4][5]). For these fuels, is it expected that NOx is produced primarily through the thermal mechanism [1,6], and the reduction in emissions is believed to be a direct consequence of the lower postflame gas temperatures.…”

Section: Introductionmentioning

confidence: 99%

Simulation of nitrogen emissions in a premixed hydrogen flame stabilized on a low swirl burner

Bell

Day

Lijewski

2013

Proceedings of the Combustion Institute

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There is considerable interest in developing fuel-flexible, low emissions turbines for power generation. One approach is based on burning a variety of lean premixed fuels with relatively low flame temperatures. Such flames can be stabilized in a low swirl burner configuration, for example, using a variety of fuels such as pure hydrogen and hydrogen-seeded hydrocarbon mixtures. However, many hydrogen-rich fuels are thermodiffusively unstable and burn in cellular flame structures, which can have a significant impact on the local nitrogen chemistry. These cellular burning patterns are characterized by a local enhancement of fuel concentration and a corresponding increase in local flame temperature just downstream. In turn, these regions become sites for enhanced thermal NOx production. The structure of these cells, and their impact on the net emissions of a flame is influenced by the global flame stabilization mechanisms and by local turbulence properties. Here we investigate the role of thermodiffusive instabilities on NOx emissions in the context of a laboratory-scale low swirl burner fueled with a lean hydrogen-air mixture at atmospheric pressure. The simulations show how the cellular burning structures characteristic of lean premixed hydrogen combustion lead to local and global enhancements in the NOx emissions. We quantify the chemical pathways that lead to the formation of NO and N2O, and how they are enhanced within local regions of intense burning.

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Marolo (Annona crassiflora Mart.): a study of value chain and processing

Cited by 6 publications

References 13 publications

Antioxidant and antimicrobial activities of ethanol and aqueous extracts from Urtica urens

Antioxidant and antimicrobial activities of ethanol and aqueous extracts from Urtica urens

La cadena de valor de hortalizas: consideraciones para el desarrollo local a partir del productor

Simulation of nitrogen emissions in a premixed hydrogen flame stabilized on a low swirl burner

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