Northern Region Of Brazil Research Articles

Emerging Contaminants Related to Brazilian Aquaculture

ABSTRACTResearch efforts around the world have focused on identifying the occurrence of emerging contaminants in aquaculture areas. In the Brazilian context, studies have aimed to identify emerging contaminants in water used for this activity. This systematic review covered studies published without a specific time frame with the following criteria: research conducted in aquaculture areas or with species and cultured water in Brazil and analysis of emerging contaminants. Out of the 42 studies identified, 132 emerging contaminants were observed. The Southeast and South regions accounted for most of these studies, with limited research conducted in the North and Northeast regions. Tilapia was the most studied species, followed by mollusks. In toxicity tests, animals showed several effects, such as decreased oxygen consumption and swimming patterns, histopathological changes, inhibition of sperm production, cardiac edema, spinal deformity, and antimicrobial resistance. In conclusion, advancements in research on emerging contaminants in Brazilian aquaculture are needed as the number of existing studies is lower compared to global numbers. Few studies have focused on analyzing cultivation sites to identify the contaminants present and their sources. Also noteworthy is the scarcity of work in the Northern region of Brazil and on native species. Characterizing these environments in terms of the types of contaminants and main sources of contamination is essential to finding ways to mitigate ecological and human health risks, as well as developing specific legislation for these contaminants because they are currently not part of routine monitoring programs and are therefore not regulated, especially in aquaculture environments.

Analysis of WRF-solar in the estimation of global horizontal irradiation in Amapá, northern Brazil

Global horizontal irradiance (GHI) was simulated using version 4.3.1 of the WRF-Solar model over the state of Amapá in the northern region of Brazil. The performance of the Fast All-sky Model for Solar Applications (FARMS) algorithm, called WsolarAPf, was evaluated. The algorithm proposed by the Baseline Surface Radiation Network was used to treat hourly data from the automatic meteorological station of the National Institute of Meteorology in the city of Macapá-AP. Two cumulus parameterizations were needed to represent the rainy and less rainy periods. The modeling used input data from ERA5 reanalysis. Using cluster analysis, it was possible to estimate the typical meteorological year representative for a large area. The use of the FARMS algorithm reduced the relative RMSE of the GHI during winter (JJA) and austral spring (SON), from 26 % to 16 % in austral winter and from 17 % to 12 % in austral spring. The average daily maximum of GHI occurs at 13:00 local time during all seasons, and WRF-Solar showed it at 13:00 and 14:00 in the rainy season and 12:00 and 13:00 in the less rainy season. The suggestion to explore the development of an optimal combination of the two model predictions can be implemented using FARMS.

Understanding the Abandonment of Aquaculturists: A Case in the Amazon (North of Brazil)

Despite the huge potential of aquaculture in the Amazon, several producers have abandoned the activity due to a lack of assistance, technology, and innovation. Thus, the objective of this study was to identify factors that have contributed to the withdrawal of aquaculturists from the municipality of ‘Vigia de Nazaré’, state of Pará (Northern Region of Brazil). This case study took place in 2022 through a quanti-qualitative survey, applying structured questionnaires to former aquaculturists. A total of 30 fish farms were investigated, with 11 of them being abandoned. They are distributed across 10 rural communities that have developed fish farming, with ‘Vila de Itapuá’ (18.2%) being the most representative. When active, fish farming was practiced by men (100%) aged between 51 to 60 years (54.5%) with an incomplete primary education (100%), who carried out the activity for an average of 5 years (81.8%), quitting fish farming between the years 2019 and 2020 (72.7%). All former aquaculturists owned small properties, with excavated ponds in an extensive system and used family labor. The absence of technical assistance and the high cost of feed were pointed out as the main problems in the production chain. It is worth noting that the monoculture of Tambaqui (Colossoma macropomum) accounted for 63.6% of the species produced in rural communities. In conclusion, former aquaculturists express the desire to return to fish farming due to its socio-economic importance. For this, government actions supporting technical assistance and advanced studies in fish nutrition by educational, research, and extension institutions are necessary.

Acceptability and willingness to pay for a hypothetical HIV vaccine in Brazil and the implications: a cross-sectional study

ABSTRACT Introduction The Human Immunodeficiency Virus (HIV) is one of the greatest public health challenges still facing communities worldwide, and until this moment, no vaccine is available for its prevention. In Brazil, the Rio de Janeiro State has stood out regarding the prevalence of this disease. As a result, an important state to consider the Willingness to Pay (WTP) for a hypothetical HIV vaccine to help with future pricing. Methods A cross-sectional study was conducted to assess the acceptability and WTP of individuals from Rio de Janeiro State for a hypothetical HIV vaccine with a 70% efficacy. Results 600 individuals were interviewed and the acceptability for this hypothetical vaccine was 77.2%. In addition, 452 participants were eligible for the WTP analysis and would accept a WTP US$79.37 (400 BRL) for this vaccine, a higher value than that found in another study (200 BRL) conducted in the Northern region of Brazil under the same methodological conditions. Conclusion Economic studies such as WTP can contribute to discussions regarding the prices and specifications for future vaccines, particularly for a HIV vaccine in countries such as Brazil with over 5,000 municipalities spread across regions with diverse characteristics and challenges in terms of socioeconomic, epidemiological and cultural differences.

Evidence of contingency factors related to financial management in state secretariats in the northern region of Brazil

This research aims to highlight the contingency factors influencing financial management in governmental entities. To achieve this goal, a descriptive, qualitative methodology was adopted, with data collection via individual electronic surveys sent to employees of different secretariats within a Brazilian state. The theoretical framework identified the following contingency variables: Environment, Structure, Technology, Information Technology, and Strategy. The results indicate that Contingency Theory (integration of contingency factors) impacts financial management, with Strategy being the only contingency variable showing interference in financial management when analyzed separately. Thus, the analyzed secretariats align with regulations, addressing managerial issues related to Environment, Structure, Technology, and Information Technology factors.

Surgical Demand and Migratory Patterns: A 10-Year Forecast for Hepatectomy in Oncology in the Northern Region of Brazil

Surgical Demand and Migratory Patterns: A 10-Year Forecast for Hepatectomy in Oncology in the Northern Region of Brazil

Temporal evolution of newly diagnosed and late syphilis prevalence: a notification analysis over the past 10 years in the state of Tocantins and the northern region of Brazil

Syphilis, a sexually or vertically transmitted pathology during gestation, represents a significant threat to maternal and child health. The absence of early diagnosis during pregnancy can result in vertical transmission, leading to recent or late congenital syphilis, both associated with severe sequelae and potentially fatal outcomes for the newborn. This study aimed to analyze epidemiological data regarding cases of gestational syphilis in the State of Tocantins, comparing them with the Northern region of Brazil over the last decade. The results revealed that, despite awareness initiatives in primary care, cases of recent congenital syphilis remain prevalent, with the years 2017 and 2018 recording the highest notification rates. It is concluded that the increase in the prevalence of recently diagnosed syphilis signals the need for improvement in health policies in Tocantins and the Northern region. The importance of early screening during prenatal care is emphasized, highlighting that accurate diagnosis and effective treatment can exempt the pregnant woman and the baby from potential future sequelae.

Diversity, Prevalence and Virulence of Colletotrichum Species Causing Anthracnose on Cassava Leaves in the Northern Region of Brazil.

Cassava (Manihot esculenta Crantz) is a staple crop widely cultivated by small farmers in tropical countries. However, despite the low level of technology required for its management, it can be affected by several diseases, with anthracnose as the main threat. There is little information about the main species of Colletotrichum that infect cassava in Brazil. Thus, the objective of this work was to study the diversity, prevalence and virulence of Colletotrichum species that cause anthracnose in cassava leaves in northern Brazil. Twenty municipalities of the Pará and Tocantins states were selected, and leaves with symptoms were collected in those locations. Pure cultures were isolated in the laboratory. Species were identified using phylogenetic analyses of multiple loci, and their pathogenicity, aggressivity and virulence levels were assessed. Our results showed the greatest diversity of Colletotrichum associated with anthracnose in cassava plants of the "Formosa" cultivar in the Tocantins and Pará states. We determined the presence of Colletotrichum chrysophilum, C. truncatum, C. siamense, C. fructicola, C. plurivorum, C. musicola and C. karsti, with C. chrysophilum as the most aggressive and virulent. Our findings provide accurate identifications of species of Colletotrichum causing anthracnose in cassava crops, which are of great relevance for cassava breeding programs (e.g., the search for genotypes with polygenic resistance since the pathogen is so diverse) and for developing anthracnose management strategies that can work efficiently against species complexes of Colletotrichum.

Moral harassment: a portrait of northern brazil based on lawsuits

Purpose: To investigate moral harassment on northern Brazil through the lens of lawsuits. Design/methodology: Statistical analyses on lawsuits from 2012 to 2018 issued at Labor Court, 11th Region, which includes states of Amazonas and Roraima. It also provided a qualitative discussion, based on semi-structured interviews with main actors (judges, prosecutors, and lawyers). Findings: A representative volume of legal actions was found, signaling the presence of moral harassment in the region. There was a higher proportion of vertical harassment (management over employees), a large concentration in industry and banks, a predominance of men as harassers and great difficulty in proving the harassment. Originality/value: This article addresses the topic of moral harassment from a lens that is still little explored, lawsuits, considering a geographic delimitation without many studies – the northern region of Brazil. Theoretical/methodological contributions: The northern Brazil presents similar characteristics regarding moral harassment to those found in other regions of the country, reinforcing the understanding of a social phenomenon under the influence of the institutional environment. Practical implications: The findings reinforce the need to debate and review how reporting channels about moral harassment are structured in the country, as it is a phenomenon that is difficult to delimit and prove but has a profound impact on the lives of its victims.

Whole genomic sequence of Salmonella Paratyphi B isolated from a hematology patient in the northern region of Brazil

Salmonella Typhi is a zoonotic pathogen responsible for a life-threatening bloodstream infection that is common in places with limited sanitation and hygiene. This study aimed to characterize the resistance genes and sequence type (ST) of Salmonella Paratyphi isolated from a patient with acute myeloid leukemia (AML) undergoing treatment at Fundação HEMOAM, in the north of Brazil. Phenotypic identification and antimicrobial susceptibility testing were performed using the VITEK-2 system. The genomic DNA was sequenced in Illumina® equipment. Resistance genes were identified through the Genome Annotation Service. The microbiological examination of the blood culture identified S. Paratyphi B. Regarding resistance genes, aminoglycoside acetyltransferase [aac(6')-Iaa] mutations in the Gly133Glu position of GyrA and Ile249Met of ParC were identified. Multilocus sequence typing detected the ST 313 sequence type. Salmonella Paratyphi B isolated from the acute myeloid leukemia patient showed cross-resistance with other antibiotics such as quinolones and tetracyclines, which resulted from mutations in the quinolone resistance-determining region and efflux pump systems.

Preliminary Study on the Chemical and Biological Properties of Propolis Extract from Stingless Bees from the Northern Region of Brazil

Natural products are historically regarded as the main sources of bioactive compounds to fight the most diverse diseases; among them, propolis deserves to be highlighted due to several biological activities, such as antioxidant, anti-inflammatory, healing, antibacterial and antileishmanial activity. In this study, the antioxidant and antipromastigote activities and the cytotoxicity of propolis of the Scaptotrigona aff. postica stingless bee were evaluated. Propolis extract was analyzed by infrared spectroscopy, thermogravimetry and spectrophotometry for total polyphenols and flavonoid contents. Antioxidant activity was assessed spectrophotometrically by the DPPH, ABTS and FRAP methods, while antipromastigote activity and cytotoxicity were assessed by the MTT assay. The infrared spectra showed the characteristic bands of both phenols and alcohols. The thermogravimetry study revealed two events and thermal stability around 370 °C, while differential scanning calorimetry showed two endothermic events and an exothermic event. Total polyphenol and flavonoid contents were 21.29 ± 0.003 mg/g and 8.17 ± 0.00 mg/g, respectively, and the antioxidant activities identified by the DPPH, ABTS and FRAP methods were 910.09 ± 0.0264 µM Trolox (IC50 18.9 ± 0.01 µg/mL), 859.97 ± 0.0854 µM Trolox (IC50 692 ± 0.01 µg/mL) and 1613.67 ± 0.2610 µM Trolox (IC50 80 ± 0.1 µg/mL), respectively. The satisfactory antioxidant activity of propolis can be related to the high content of phenolic compounds, which adds value to this product and can contribute to the development of meliponiculture in the Brazilian state of Pará. The propolis extract caused a toxic effect on promastigote forms of Leishmania amazonensis at all concentrations tested, with an IC50 value of 1.50 µg/mL and a statistically significant difference compared to the negative control (p < 0.001). These results show that the propolis extract from S. postica bees may be a promising alternative for treatment against promastigote forms of L. amazonensis.

Thermographic Profiles in Livestock Systems under Full Sun and Shaded Pastures during an Extreme Climate Event in the Eastern Amazon, Brazil: El Niño of 2023.

The El Niño represents a substantial threat to pastures, affecting the availability of water, forage and compromising the sustainability of grazing areas, especially in the northern region of Brazil. Therefore, the objective of this study was to characterize the thermographic profile of three production systems in the Eastern Amazon, Brazil. The study was conducted on a rural cattle farm in Mojuí dos Campos, Pará, Brazil, between August and November 2023. The experiment involved livestock production systems, including traditional, silvopastoral and integrated, with different conditions of shade and access to the bathing area. An infrared thermographic (IRT) camera was used, recording temperatures in different zones, such as areas with trees, pastures with forage and exposed pastures. The highest mean temperatures (p = 0.02) were observed in pastures with full sun from August to November. On the other hand, the lowest average temperatures were recorded in areas shaded by chestnut trees (Bertholletia excelsa). The highest temperature ranges were found in sunny areas and the lowest were recorded in shaded areas. The highest temperatures were observed in the pasture in full sun, while the lowest were recorded in areas shaded by chestnut trees (p < 0.0001). The interaction between the systems and treatments revealed significant temperature differences (p < 0.0001), with the native trees showing an average temperature of 35.9 °C, lower than the grasses and soil, which reached 61.2 °C. This research concludes that, under El Niño in the Eastern Amazon, areas shaded by Brazil nut trees had lower temperatures, demonstrating the effectiveness of shade. Native trees, compared to grasses and soil, showed the ability to create cooler environments, highlighting the positive influence on different species such as sheep, goats and cattle.

Variations of nursing care in patients with COVID-19 in the northern region of Brazil

Although nurses are directly involved in the treatment of patients with COVID-19, their possibilities and limits in dealing with the disease are not well defined. This is at least partly due to the fact that nursing procedures are still being modified. This study aimed to analyze the variations in nursing care for patients with COVID-19 in the public health network in a municipality in the northern region of Brazil. This is a retrospective observational study in which data from the medical records of 499 patients hospitalized in the public health network of the city of Marabá, Brazil, between March and October 2020 were cataloged. The sample was divided into two groups: the first group consisted of the medical records of patients hospitalized between March and June (1st semester, n = 327) and the second group consisted of the medical records of patients hospitalized between July and October 2020 (2nd semester, n = 172). Regarding the 1st semester of 2020, it was observed that 16 nursing care (59.3%) were statistically lower than those of the 2nd semester of 2020 and eight nursing care (29.6%) were statistically higher than those of the 2nd semester of 2020. Furthermore, three nursing care (11.1%) did not show significant differences between the 2 semesters. Overall, the percentage of nursing care increased from the 1st to the 2nd semester (52.8 ± 17.6% vs. 62.7 ± 5.1%, P &lt; 0.001); the greatest changes occurred in relation to the musculoskeletal system (37.3 ± 22.9% vs. 53.3 ± 7.7%, P &lt; 0.001). In conclusion, in the initial months of the pandemic, nursing care was less intense, which may have been a consequence of the lack of knowledge about COVID-19. This may have had a negative impact on epidemiological data from the beginning of the pandemic.

PRODUCTION ARRANGEMENTS FOR TEMPORARY AND PERMANENT CROPS IN THE MUNICIPALITIES OF SANTARÉM AND MOJUÍ DOS CAMPOS - PARÁ

In the northern region of Brazil, the municipalities of Santarém and Mojuí dos Campos have been experimenting with the transformation of a productive system formerly based on traditional family agriculture to large scale mechanized agriculture. A new agricultural frontier has established itself in the region, driven by favorable conditions of climate, topography, and low land cost, and since then has attracted an increasing number of grain farmers from various regions of the country. Thus, the objective of this article is to analyze the dynamics of the permanent and temporary crop production chains in the municipalities of Santarém and Mojuí dos Campos, in the western region of the state of Pará, as well as identify the main factors that interfere in this productive chain. For this purpose, quantitative data were collected from the IBGE System of Automatic Recovery (Sidra) and the information was collected in the database of Municipal Agricultural Production (PAM). We concluded with the present research that grain productivity in Santarém and Mojuí dos Campos shows itself to be growing in recent years due to the high prices of soybeans and corn in the international market.

Chemical profile and biological properties of the Piper corcovadense C.DC. essential oil

The essential oil fromPiper corcovadense D.DC. (EOPc), an important plant belonging to the Piperaceae family, which is commonly found in the northern region of Brazil and poorly explored scientifically, was used in this study. Thus, the EOPc was characterized chemically by Gas Chromatography/Mass Spectrometry (GC/MS) and the antioxidant and antimicrobial activities and their potential effects on cutaneous melanoma (SK-MEL-28) and healthy peripheral blood mononuclear (PBMC) cells were determined. The major compounds identified in the EOPc were: trans-sesquisabinene hydrate, trans-caryophyllene, β-pinene, trans-β-farnesene, 14-hydroxycaryophyllene, limonene and p-cymene. The EOPc demonstrated antioxidant activity as evaluated by Folin-Ciocalteu reagent (FC) reducing capacity, DPPH, and ABTS methods. The values found were respectively 5.41 ± 0.17 mg GAE mL−1 (GAE: Gallic acid equivalent), 2.88 ± 0.17 µmol TE mL−1 (TE: Trolox equivalent) and 6.26 ± 0.02 µmol TE mL−1. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined for different bacterial strains. The EOPc at a concentration of 2.61 µg mL−1 exhibited both bactericidal and bacteriostatic properties against Escherichia coli. The EOPc showed potential antitumor activity as it reduced the cell viability of human cutaneous melanoma cells SK-MEL-28. Besides, the EOPc did not exhibit cytotoxic activity against healthy PBMCs, indicating that it does not harm healthy cells at the tested concentrations. The EOPc increased the levels of ROS at concentrations of 250 µg mL−1. The EOPc also did not stimulate the mobilization of endogenous antioxidant defenses, as assessed by total thiol (PSH) and non-protein thiols (NPSH). Thus, the study suggests that the EOPc has antioxidant and antimicrobial properties due to the presence of specific compounds. It also exhibits antitumor potential against cutaneous melanoma cells while showing no cytotoxicity to healthy PBMCs. It directly influenced ROS levels at the highest tested concentration in the cells, suggesting an antitumor effect related to the intrinsic apoptosis pathway. Nevertheless, while the study has initial findings, the results are promising and indicate an attractive biological potential of P. corcovadense, mainly in human cutaneous melanoma cells.

Gastric cancer in the northern region and its possible risk factors: a quantitative analysis of deaths from 2015 to 2019 in Brazil

Gastric cancer (GC) is gaining importance in Brazil due to the quantitative increase in the pathology in the population. The main risk factors evidenced by epidemiological studies are genetic and environmental factors, mainly the country’s characteristic diet, rich in foods high in sodium and starch. Additionally, the consumption of alcoholic beverages and smoking, as well as infection caused by the bacterium Helicobacter pylori, which is related to pathological processes of the stomach that can lead to the development of gastric GC, are highlighted. Thus, the present study concluded that the Northern region of Brazil is the most affected by this type of GC compared to other regions of the country, due to the predominance of risk factors in this locality and the high rates of stomach GC registered during the period analyzed by the present study.

P840 Structural evaluation of Inflammatory Bowel Disease Comprehensive Care Units in Brazil

Abstract Background In Brazil there is no methodology for evaluating health services recognized as Comprehensive Care Units (CCU), making it difficult to assess the quality of care provided for IBD patients. Aims: Map the distribution of this units and identify strengths and weaknesses, considering local and regional characteristics with a view to proposing a ranking system for Brazilian centers. Methods The study was carried out in three phases. First, GEDIIB developed 22 questions to characterize CCU in Brazil. The questionary was constructed based on GETECCU criteria. All GEDIIB members were invited to respond to the survey with the 11 questions considered most relevant. In the last phase, an analysis of the results obtained in the CCU was carried out, using the IBM SPSS Statistics v 29.0.1.0 software. Descriptive statistics were used to characterize the unit´s profile. The chi-square test was used to compare categorical variables Results There were 109 responses, 53 from public centers. Of these, 11 were excluded. Most units were concentrated in the Southeastern region 22 (52.4%) and only one (2.4%) in the Northern region of Brazil. Thirty-nine centers (92.9%) perform endoscopic procedures, but only 9 (21.4%) have access to enteroscopy and/or capsule endoscopy. Thirty-three centers (78.6%) offer infusion therapy locally, 26 (61.9%) maintain IBD patient records, 13 (31.0%) reported having an IBD nurse, 34 (81.0%) have specific evidence-based protocols and only 7 (16.7%) have a patient satisfaction methodology. In the private scenario there were 56 responses, of which 10 were excluded. There is also a concentration in the Southeastern and Southern regions. Thirty-nine centers (84.8%) have access to endoscopic procedures and 19 perform enteroscopy and/or capsule endoscopy. Infusion therapy is available in 24 centers (52.2%). Thirty-nine (84.8%) maintain a specific database of IBD patients, 17 (37%) have an IBD nurse, 36 (78.3%) have specific evidence-based protocols, and 22 (47.8%) apply a patient satisfaction methodology. Multidisciplinary teams (p&amp;lt; 0.002) and infusion centers (p&amp;lt; 0.01) predominate in public centers as compared to private ones. Telemedicine (p&amp;lt; 0.027), capsule endoscopy (p&amp;lt; 0.001), exclusive registration of patients with IBD (p&amp;lt; 0.015) and patient satisfaction methodologies (p&amp;lt; 0.002) are predominant in private centers as compared to public centers. Conclusion IBD CCU in Brazil were mainly located in the southeastern and southern regions of the country. Most centers have dedicated multidisciplinary teams and specialists involved in IBD treatment. There is still a current need to improve the proportion of nurses' involvement in IBD care in Brazil.

A new cave-dwelling species of Charinus (Amblypygi: Charinidae) from northern Brazil.

We present the description and illustration of a new species within the genus Charinus Simon, 1892, discovered in a cave located in the state of Tocantins, situated in the northern region of Brazil. Charinus tocantinensis sp. nov., can be distinguished from its congeners by the following combination of distinctive characters: pedipalp femur with four dorsal spines and four ventral spines; well-developed median eyes and median ocular tubercle; female gonopods sucker-like, slightly longer than wide, opening rounded and margins with fold with each a small posterior slit; cheliceral claw with ten denticles. In addition to the species description, we have included a key for identifying Charinus species in Brazil, along with a distribution map that highlights the known species in the country. This newly described species marks the first formal documentation of a Charinus species within the state of Tocantins. With the addition of this species, the global tally of recognized Charinus species now stands at 98, and Brazil, in particular, is home to a total of 44 formally described species within this genus.

Detection of a Multiple Circulation Event of Dengue Virus 2 Strains in the Northern Region of Brazil.

Dengue virus serotype 2 (DENV-2) is responsible for dengue epidemics on a global scale and is associated with severe cases of the disease. This study conducted a phylogenetic investigation of DENV-2 isolates from 2017 to 2021 originating from the northern states of Brazil. A total of 32 samples from DENV-2 isolates were analyzed, including 12 from Acre, 19 from Roraima, and one from Tocantins. Only one lineage of the Asian-American genotype and one lineage of the cosmopolitan genotype were observed: Lineage 1, Asian-American genotype (connection to Puerto Rico); Lineage 5, cosmopolitan genotype (connection to Peru). Our results provide important data regarding the study of DENV genotypes and lineage distribution and open up possibilities for probable introduction and dissemination routes.

Evaluation of coating mortars with addition of açaí seed (Euterpe oleracea Mart.) in different processing conditions

The açaizeiro is a palm tree found in large scale in the northern region of Brazil and one of its main non-timber forest products, with great economic potential. However, the wastes, which represent about 85% of the total fruit, are an environmental problem, since about 365 tonnes of seeds are discarded daily, without any reuse. The objective of this research is to evaluate the potential of reuse of the açaí seed as partial replacement by mass (10%) of the fine aggregate in mortars for coating (1:3 vol ratio). The seeds were crushed and divided into groups to be subjected to different types of treatment, namely calcination and liquid paraffin. Four samples were studied, R1 (reference - without seeds), R2 (calcined seeds), R3 (untreated crushed seeds) and R4 (paraffin treated seeds). The samples were subjected to fresh state tests, hardened state tests and microstructural analyses. The results show that in the fresh state sample R2 shows the best indexes when compared to the reference mix, with only a small improvement in consistency and water retention. In the hardened state, all compositions showed a significant loss of mechanical strength, demonstrating the weakness caused by the waste in the matrix. The microstructural analyses show a slight increase in porosity and amorphism in the sample due to the presence of the waste. For the mixes, substitution ratios, water/cement ratio and treatments adopted, the characteristics of the mortars do not meet the intended use.