Athena Jan Derayunan, Hannah Leah Relacion, April Rose Buntod, Bryan Lee D. Celeste
This paper describes the work-life balance among employees of Central Mindanao University. It focuses on the meanings and opportunities attached with work and life by discovering their day-to-day struggles, and experiences. Descriptive and exploratory research approaches were used wherein respondents were conveniently sampled. Data were gathered through one-on-one in-depth interviews with 10 respondents following a set of inclusion criteria. The respondents represented 6 faculty members and 4 staff. Results of the study revealed that respondents go through work struggles due to unclear job duties and responsibilities; generally heavy work load; personal relationships and social activities were affected; feelings of helplessness to improve struggles. In spite of the difficulties encountered by the respondents, these have not affected them finding their work to be meaningful; enabling them economic stability and personal fulfillment.
{"title":"Work-Life Balance: Exploring Meanings and Opportunities Among Employees of Central Mindanao University","authors":"Athena Jan Derayunan, Hannah Leah Relacion, April Rose Buntod, Bryan Lee D. Celeste","doi":"10.52751/kkyn5597","DOIUrl":"https://doi.org/10.52751/kkyn5597","url":null,"abstract":"This paper describes the work-life balance among employees of Central Mindanao University. It focuses on the meanings and opportunities attached with work and life by discovering their day-to-day struggles, and experiences. Descriptive and exploratory research approaches were used wherein respondents were conveniently sampled. Data were gathered through one-on-one in-depth interviews with 10 respondents following a set of inclusion criteria. The respondents represented 6 faculty members and 4 staff. Results of the study revealed that respondents go through work struggles due to unclear job duties and responsibilities; generally heavy work load; personal relationships and social activities were affected; feelings of helplessness to improve struggles. In spite of the difficulties encountered by the respondents, these have not affected them finding their work to be meaningful; enabling them economic stability and personal fulfillment.","PeriodicalId":429775,"journal":{"name":"Central Mindanao University Journal of Science","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129933603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Radzma Morales, Wilfred Alava, Jr., Alwielland Q. Bello
This study investigated the effects of multiple game-based strategies on learners’ academic performance and engagement in Grade 10 Science. It was conducted at Esperanza National High School, Schools Division of Sultan Kudarat, during the school year 2019-2020. The study used one group pretest-posttest quasi-experimental research design. This was participated by Grade 10 learners. The development of lessons, validation of instruments, and try-out was made prior to the actual conduct of the study. The data gathered using the 30- item validated researcher-made academic performance test and engagement scale in Science were analyzed and interpreted using appropriate statistical techniques. Mean, standard deviation, and one-way analysis of covariance (ANCOVA) were also used. Findings revealed that the academic performance in Biology of Grade 10 learners taught with multiple game-based strategies was fairly satisfactory; while, the learners taught with the usual way of teaching method, “did not meet the expectation.” There was a statistically significant difference in the academic performance between the learners’ taught with multiple game-based strategies and those learners’ who were taught with the usual way of teaching method. Moreover, the experimental group had high mean scores compared with that of the control group. The group of learners using multiple game-based strategies performed better.
{"title":"Effects of Multiple Game-based Strategies in Grade 10 Science Learning","authors":"Radzma Morales, Wilfred Alava, Jr., Alwielland Q. Bello","doi":"10.52751/zzoy6467","DOIUrl":"https://doi.org/10.52751/zzoy6467","url":null,"abstract":"This study investigated the effects of multiple game-based strategies on learners’ academic performance and engagement in Grade 10 Science. It was conducted at Esperanza National High School, Schools Division of Sultan Kudarat, during the school year 2019-2020. The study used one group pretest-posttest quasi-experimental research design. This was participated by Grade 10 learners. The development of lessons, validation of instruments, and try-out was made prior to the actual conduct of the study. The data gathered using the 30- item validated researcher-made academic performance test and engagement scale in Science were analyzed and interpreted using appropriate statistical techniques. Mean, standard deviation, and one-way analysis of covariance (ANCOVA) were also used. Findings revealed that the academic performance in Biology of Grade 10 learners taught with multiple game-based strategies was fairly satisfactory; while, the learners taught with the usual way of teaching method, “did not meet the expectation.” There was a statistically significant difference in the academic performance between the learners’ taught with multiple game-based strategies and those learners’ who were taught with the usual way of teaching method. Moreover, the experimental group had high mean scores compared with that of the control group. The group of learners using multiple game-based strategies performed better.","PeriodicalId":429775,"journal":{"name":"Central Mindanao University Journal of Science","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127398325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Antibiotic-resistant biofilm is a complex microbial community associated in the high risk of morbidity and mortality of hospitalized patients. The current study aims to determine the antibiofilm activity of invasive Erigeron floribundus plant extracts often known as "abas-abas" against Staphylococcus aureus and Pseudomonas aeruginosa. Bacterial strains were grown in M1 medium supplemented with fructose and cultivated for 24 and 48 hours at 30°C. Higher % biofilm inhibition was observed in gram-positive bacteria Staphylococcus aureus in most of the solvent use in extraction. Qualitative phytochemical screening was also evaluated and revealed the presence of tannins, flavonoid, saponins, steroid and the absence of alkaloid. The existences of these phytochemicals in the plant could be used to generate synthetic medications as a source of precursors. Moreover, this study also reveals that E. floribundus extract had antibiofilm action against the isolated nosocomial bacteria, implying that it could be used as an alternative to prevent microbial biofilm development.
{"title":"Antibiofilm Activity of Erigeron floribundus (Kunth) Against Staphylococcus Aureus and Pseudomonas Aeruginosa","authors":"Merced G. Melencion, Christine Joy Lahaylahay","doi":"10.52751/umrt7147","DOIUrl":"https://doi.org/10.52751/umrt7147","url":null,"abstract":"Antibiotic-resistant biofilm is a complex microbial community associated in the high risk of morbidity and mortality of hospitalized patients. The current study aims to determine the antibiofilm activity of invasive Erigeron floribundus plant extracts often known as \"abas-abas\" against Staphylococcus aureus and Pseudomonas aeruginosa. Bacterial strains were grown in M1 medium supplemented with fructose and cultivated for 24 and 48 hours at 30°C. Higher % biofilm inhibition was observed in gram-positive bacteria Staphylococcus aureus in most of the solvent use in extraction. Qualitative phytochemical screening was also evaluated and revealed the presence of tannins, flavonoid, saponins, steroid and the absence of alkaloid. The existences of these phytochemicals in the plant could be used to generate synthetic medications as a source of precursors. Moreover, this study also reveals that E. floribundus extract had antibiofilm action against the isolated nosocomial bacteria, implying that it could be used as an alternative to prevent microbial biofilm development.","PeriodicalId":429775,"journal":{"name":"Central Mindanao University Journal of Science","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114054940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Flacourtia jangomas, locally known as Seriales is an indigenous fruit tree in the Philippines. It potentially contains important nutrients and bioactive compounds, but it is a less known commodity, with no economic value. Moreover, the fruit is highly prone to enzymatic browning reaction, resulting to undesirable discoloration once exposed to air. Hence, this study was conducted to determine the changes in the physico-chemical properties of ripe Seriales fruit as affected by boiling time and storage conditions. Ripe Seriales fruits of known weight were exposed to upto 10 minutes of boiling water. Representative samples from each treatment were analysed of its color, total soluble solids, pH, and % titratable acidity. The same procedures were done to samples that had been stored for 19 days in the freezer. The results of the experiment revealed that storage conditions (frozen and not frozen) only affected the b* of the skin of the ripe Seriales fruits, while boiling time affected all other parameters, excepts pH, %TTA, and b* values of the fruit flesh.
{"title":"EFFECT OF BOILING TIME AND STORAGE CONDITION (FROZEN AND UNFROZEN) ON THE PHYSICO-CHEMICAL PROPERTIES OF FLACOURTIA JANGOMAS (LOUR) RAUESCH FRUIT","authors":"L. Cimafranca","doi":"10.52751/vacr1044","DOIUrl":"https://doi.org/10.52751/vacr1044","url":null,"abstract":"Flacourtia jangomas, locally known as Seriales is an indigenous fruit tree in the Philippines. It potentially contains important nutrients and bioactive compounds, but it is a less known commodity, with no economic value. Moreover, the fruit is highly prone to enzymatic browning reaction, resulting to undesirable discoloration once exposed to air. Hence, this study was conducted to determine the changes in the physico-chemical properties of ripe Seriales fruit as affected by boiling time and storage conditions. Ripe Seriales fruits of known weight were exposed to upto 10 minutes of boiling water. Representative samples from each treatment were analysed of its color, total soluble solids, pH, and % titratable acidity. The same procedures were done to samples that had been stored for 19 days in the freezer. The results of the experiment revealed that storage conditions (frozen and not frozen) only affected the b* of the skin of the ripe Seriales fruits, while boiling time affected all other parameters, excepts pH, %TTA, and b* values of the fruit flesh.","PeriodicalId":429775,"journal":{"name":"Central Mindanao University Journal of Science","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115311344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The present study was conducted to compile information on species composition of moths found from Mt. Musuan, Maramag, Bukidnon. The moths were collected using a light trapping method from November to December 2014 on three vegetation types namely grassland, pine trees and mixed dipterocarp vegetations of Mt. Musuan. The study revealed the presence of 29 species belonging to 11 families and 24 genera. The species abundance was recorded highest in mixed dipterocarp vegetation with 6.681 mean individuals, followed by in pine tree vegetation with 3.085 mean individuals and 1.723 mean individuals in grasslands. Sixteen (16) species are randomly distributed which includes Asota Hubner, Amerila Walker, Carriola ecnomoda Swinhoe, Creatonotos gangis Linneaus, Nyctemera baulus Boisduval, Oenistis altica Linnaeus, Gastrina cristaria Guenée, Pingasa chlora Stoll, Taxeotis sp. 1 Guest, Hypomecis Hubner, Pingasa ruginaria Guenée, Pinara sp. 1 Walker, Persectania dyscrita Common, Noctuidae sp. 1 Latrielle, Dudusa Walker and Ourapteryx Leach. Therefore, Mt. Musuan is a home of 29 species of moth belonging to twenty-four (24) genera and eleven (11)families. There are 16 species species of moths that are randomly distributed.
{"title":"FAUNAL COMPOSITION OF MACROMOTHS OF MT. MUSUAN, MARAMAG, BUKIDNON","authors":"Kerk Rekkem Rafil, J. M. Toledo","doi":"10.52751/ilzb3992","DOIUrl":"https://doi.org/10.52751/ilzb3992","url":null,"abstract":"The present study was conducted to compile information on species composition of moths found from Mt. Musuan, Maramag, Bukidnon. The moths were collected using a light trapping method from November to December 2014 on three vegetation types namely grassland, pine trees and mixed dipterocarp vegetations of Mt. Musuan. The study revealed the presence of 29 species belonging to 11 families and 24 genera. The species abundance was recorded highest in mixed dipterocarp vegetation with 6.681 mean individuals, followed by in pine tree vegetation with 3.085 mean individuals and 1.723 mean individuals in grasslands. Sixteen (16) species are randomly distributed which includes Asota Hubner, Amerila Walker, Carriola ecnomoda Swinhoe, Creatonotos gangis Linneaus, Nyctemera baulus Boisduval, Oenistis altica Linnaeus, Gastrina cristaria Guenée, Pingasa chlora Stoll, Taxeotis sp. 1 Guest, Hypomecis Hubner, Pingasa ruginaria Guenée, Pinara sp. 1 Walker, Persectania dyscrita Common, Noctuidae sp. 1 Latrielle, Dudusa Walker and Ourapteryx Leach. Therefore, Mt. Musuan is a home of 29 species of moth belonging to twenty-four (24) genera and eleven (11)families. There are 16 species species of moths that are randomly distributed.","PeriodicalId":429775,"journal":{"name":"Central Mindanao University Journal of Science","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125345828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The study aimed to evaluate the acaricidal efficacy of the ethanol leaf extracts of Azadirachta indica A. Juss., Tinospora rumphii Boerl., and Vitex negundo against Sarcoptes scabiei var. canis. It also aimed to determine the concentration level of each leaf extract which has the highest acaricidal activity. Ethanolic leaf extracts from the plants were prepared in 10% and 50% concentrations. Mite mortality was not ed as percentage efficacy and was measured 0.5, 1, 2, and 6 hours post-exposure. The study utilized Completed Randomized Design and One-way Analysis of Variance (ANOVA) for the data. All concentration levels of the plant extracts showed acaricidal potential. Activity for 10% and 50% ethanolic extracts of T. rumphii, V. negundo, and A. indica were 73.33% and 93.33%, 63.33% and 93.33%, and 36.67% and 76.67%, respectively. As indicated, T. rumphii showed the best acaricidal activity followed by V. negundo and A. indica. It also showed that only the 50% concentration level of T. rumphii and V. negundo have comparable acaricidal effects with a commercial acaricidal solution. It is recommended that further studies will be conducted to determine the lowest effective concentration level for each leaf extract, its toxicity, its bioactive compounds, and in vivo trials.
{"title":"Azadirachta indica A. Juss., Tinospora rumphii Boerl. and Vitex negundo against Sarcoptes scabiei in vitro","authors":"Jose Jr Obedencio","doi":"10.52751/cczy2874","DOIUrl":"https://doi.org/10.52751/cczy2874","url":null,"abstract":"The study aimed to evaluate the acaricidal efficacy of the ethanol leaf extracts of Azadirachta indica A. Juss., Tinospora rumphii Boerl., and Vitex negundo against Sarcoptes scabiei var. canis. It also aimed to determine the concentration level of each leaf extract which has the highest acaricidal activity. Ethanolic leaf extracts from the plants were prepared in 10% and 50% concentrations. Mite mortality was not ed as percentage efficacy and was measured 0.5, 1, 2, and 6 hours post-exposure. The study utilized Completed Randomized Design and One-way Analysis of Variance (ANOVA) for the data. All concentration levels of the plant extracts showed acaricidal potential. Activity for 10% and 50% ethanolic extracts of T. rumphii, V. negundo, and A. indica were 73.33% and 93.33%, 63.33% and 93.33%, and 36.67% and 76.67%, respectively. As indicated, T. rumphii showed the best acaricidal activity followed by V. negundo and A. indica. It also showed that only the 50% concentration level of T. rumphii and V. negundo have comparable acaricidal effects with a commercial acaricidal solution. It is recommended that further studies will be conducted to determine the lowest effective concentration level for each leaf extract, its toxicity, its bioactive compounds, and in vivo trials.","PeriodicalId":429775,"journal":{"name":"Central Mindanao University Journal of Science","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116082214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pongamia pinnata or “bani” in the Philippines is a non-food crop that can grow on marginal land where food crops do not grow. Its seeds are used for biofuel production such as biodiesel and aviation fuel. It is resilient against abiotic stresses such as drought, salinity and acidity. It can also grow in nitrogen-limited soils. It is capable of nitrogenfixation activity through its root nodules developed by symbiosis with rhizobia. Rhizobium mesoamericanum (LopezLopez et al., 2012) promotes the nodulation of Pongamia as confirmed by strain symbiotic effectiveness testing where shoot length, number of nodes, number of leaflet ts, nodule number, and plant dry weights were analysed. Variability test was carried out to determine any variability of nodulation in the seeds coming from one mother tree. A time course of nodulation revealed that there was an increasing pattern of nodule number, leghemoglobin concentration, area of zone of infection and dry weights. Nodulation increased when nitrate concentration was increased from 2 to 5 mM, but was inhibited in 10 mM nitrate. Nodulation decreased as salinity increased from 1% to 3%. R. mesomaericanum improved the growth and nodulation in Pongamia, whether as a group or as individual inoculants, provided that a sufficient concentration of the inoculant was achieved.
菲律宾的Pongamia pinnata或“bani”是一种非粮食作物，可以生长在不种植粮食作物的边缘土地上。它的种子用于生物燃料生产，如生物柴油和航空燃料。它对干旱、盐度和酸度等非生物胁迫具有弹性。它也能在氮素限制的土壤中生长。它通过与根瘤菌共生而形成的根瘤具有固氮活性。中美洲根瘤菌(LopezLopez et al.， 2012)促进蓬属植物结瘤，菌株共生有效性测试证实了这一点，该测试分析了茎长、节数、小叶数、节数和植株干重。进行变异试验，以确定来自同一母树的种子结瘤的变异。结瘤的时间过程显示结节数量、血红蛋白浓度、感染区面积和干重呈增加趋势。当硝酸盐浓度从2 mM增加到5 mM时，结瘤增加，但在10 mM时，结瘤受到抑制。矿化度从1%增加到3%，结瘤减少。只要接种剂浓度足够，无论是作为群体接种剂还是作为个体接种剂，均能促进pomamia的生长和结瘤。
{"title":"Factors affecting the nodulation of Pongamia pinnata (L.) Pierre inoculated with Rhizobium mesoamericanum (Lopez-Lopez et al., 2012)","authors":"Phoebe S. Nemenzo","doi":"10.52751/eqse9859","DOIUrl":"https://doi.org/10.52751/eqse9859","url":null,"abstract":"Pongamia pinnata or “bani” in the Philippines is a non-food crop that can grow on marginal land where food crops do not grow. Its seeds are used for biofuel production such as biodiesel and aviation fuel. It is resilient against abiotic stresses such as drought, salinity and acidity. It can also grow in nitrogen-limited soils. It is capable of nitrogenfixation activity through its root nodules developed by symbiosis with rhizobia. Rhizobium mesoamericanum (LopezLopez et al., 2012) promotes the nodulation of Pongamia as confirmed by strain symbiotic effectiveness testing where shoot length, number of nodes, number of leaflet ts, nodule number, and plant dry weights were analysed. Variability test was carried out to determine any variability of nodulation in the seeds coming from one mother tree. A time course of nodulation revealed that there was an increasing pattern of nodule number, leghemoglobin concentration, area of zone of infection and dry weights. Nodulation increased when nitrate concentration was increased from 2 to 5 mM, but was inhibited in 10 mM nitrate. Nodulation decreased as salinity increased from 1% to 3%. R. mesomaericanum improved the growth and nodulation in Pongamia, whether as a group or as individual inoculants, provided that a sufficient concentration of the inoculant was achieved.","PeriodicalId":429775,"journal":{"name":"Central Mindanao University Journal of Science","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123964646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study was conducted to assess the species composition and conservation status of pteridophytes in the north-eastern portion of Mount Timolan Protected Landscape. The studyrevealed a total of 98 species comprising 52 genera from 21 families. Tectariaceae, Polypodiaceae and Dryopteridaceae was the most represent family with Tectariaceae accounts the highest in terms of genera (9), followed by Polypodiaceae (8) and Dryopteridaceae (6). Whereas, Polypodiaceae has the highest in terms of species record (16 spp.), tailed by Tectariaceae (14 spp.) and Dryopteridaceae (10 spp.). Out of 98 recorded species, 95 were only identified up to species level. High number of accounted family of terrestrial ferns and lycophytes are known as good ecological indicator taxa for habitat destruction and level of human disturbances. In terms of status, eleven (11 spp.) are endemic to Philippines, eighteen (18 spp.) are economically important species, nine (9 spp.) vulnerable, five (5 spp.) classified as other threatened species and two (2 spp.) are nonnative species of ferns and lycophytes was recorded. Generally, the high species richness of pteridophytes found in the north-eastern portion of Mount Timolan Protected Landscape are influenced by elevation gradient and susceptibility to human disturbances.
{"title":"Species Richness and Status of Pteridophytes in North-Eastern Part of Mount Timolan Protected Landscape, Zamboanga del Sur, Philippines","authors":"L. Calimbo","doi":"10.52751/svgb4056","DOIUrl":"https://doi.org/10.52751/svgb4056","url":null,"abstract":"This study was conducted to assess the species composition and conservation status of pteridophytes in the north-eastern portion of Mount Timolan Protected Landscape. The studyrevealed a total of 98 species comprising 52 genera from 21 families. Tectariaceae, Polypodiaceae and Dryopteridaceae was the most represent family with Tectariaceae accounts the highest in terms of genera (9), followed by Polypodiaceae (8) and Dryopteridaceae (6). Whereas, Polypodiaceae has the highest in terms of species record (16 spp.), tailed by Tectariaceae (14 spp.) and Dryopteridaceae (10 spp.). Out of 98 recorded species, 95 were only identified up to species level. High number of accounted family of terrestrial ferns and lycophytes are known as good ecological indicator taxa for habitat destruction and level of human disturbances. In terms of status, eleven (11 spp.) are endemic to Philippines, eighteen (18 spp.) are economically important species, nine (9 spp.) vulnerable, five (5 spp.) classified as other threatened species and two (2 spp.) are nonnative species of ferns and lycophytes was recorded. Generally, the high species richness of pteridophytes found in the north-eastern portion of Mount Timolan Protected Landscape are influenced by elevation gradient and susceptibility to human disturbances.","PeriodicalId":429775,"journal":{"name":"Central Mindanao University Journal of Science","volume":"27 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133688482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this study, the ethanolic leaf extract of Chromolaena odorata was analyzed for qualitative and quantitative composition and evaluated for oral toxicity in Swiss Webster albino mice. The mice were grouped into two and tested for acute (fixed single dose of 2000 and 5000 mg/kg) and sub-acute (daily dose of 250 and 500mg/kg extract for 28 days) toxicity. Animal behavior, body weight, morbidity, and mortality were monitored for 14 days (acute) and 28 days (sub-acute), respectively. Hematologic and blood chemistry parameters (alanine transaminase (ALT), blood urea nitrogen (BUN), creatinine) were measured and analyzed. The mice were sacrificed and necropsied at the end of the study, and organ weights were analyzed. Based on the phytochemical analysis, C. odorata contained phenols, flavonoids, tannins, saponins, and anthraquinones. Total phenolic and flavonoids were 146.69±10.25 mg gallic acid equivalent (GAE/L) and 25.75±2.64 mg quercetin equivalent (QE/g). A single dose of the extract (2000-5000mg/kg) is non-lethal but causes temporary toxicity signs. Repeated doses (250-500 mg/kg) caused low ALT, mortality (500 mg/kg), tachypnea, dry hair coat, and alopecia. Both acute and sub-acute toxicity of the leaf extract hampers growth.
{"title":"Phytochemical and Oral Toxicity Studies of Chromolaena odorata L. (King and Robinson)Leaf Extract","authors":"A. Juan","doi":"10.52751/deju9088","DOIUrl":"https://doi.org/10.52751/deju9088","url":null,"abstract":"In this study, the ethanolic leaf extract of Chromolaena odorata was analyzed for qualitative and quantitative composition and evaluated for oral toxicity in Swiss Webster albino mice. The mice were grouped into two and tested for acute (fixed single dose of 2000 and 5000 mg/kg) and sub-acute (daily dose of 250 and 500mg/kg extract for 28 days) toxicity. Animal behavior, body weight, morbidity, and mortality were monitored for 14 days (acute) and 28 days (sub-acute), respectively. Hematologic and blood chemistry parameters (alanine transaminase (ALT), blood urea nitrogen (BUN), creatinine) were measured and analyzed. The mice were sacrificed and necropsied at the end of the study, and organ weights were analyzed. Based on the phytochemical analysis, C. odorata contained phenols, flavonoids, tannins, saponins, and anthraquinones. Total phenolic and flavonoids were 146.69±10.25 mg gallic acid equivalent (GAE/L) and 25.75±2.64 mg quercetin equivalent (QE/g). A single dose of the extract (2000-5000mg/kg) is non-lethal but causes temporary toxicity signs. Repeated doses (250-500 mg/kg) caused low ALT, mortality (500 mg/kg), tachypnea, dry hair coat, and alopecia. Both acute and sub-acute toxicity of the leaf extract hampers growth.","PeriodicalId":429775,"journal":{"name":"Central Mindanao University Journal of Science","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115010280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With growing reports of multidrug-resistant pathogens causing untreatable human infections, the need for new antimicrobial therapies is becoming increasingly important. This study was conducted to investigate the antimicrobial properties of the leaf extracts of Premna odorata Blanco, Petersianthus quadrialatus Merr., Shorea astylosa Foxw., and Tridax procumbens Linn. The medicinal importance of these plants remains understudied despite their abundant distribution and endemism in the Philippines. A disk diffusion assay was utilized to test the antimicrobial properties of T. procumbens leaf extract against Pseudomonas aeruginosa and Staphylococcus aureus. On the one hand, the fungal colony and spore germination assay was used to test P. odorata, P. quadrialatus, and S. astylosa leaf extracts against Aspergillus niger. Different concentrations of leaf extracts were prepared and compared with positive and negative controls. T. procumbens minimally inhibits the growth of P. aeruginosa (10 mm) and S. aureus (10 mm), while S. astylosa leaf extracts revealed the most significant inhibition on colony growth (5.38 mm) and spore germination (15). P. odorata and P. quadrialatus showed the least (28.35 mm; 82.17) and moderate (10.97 mm; 49.5) inhibitory potentials, respectively. The discovery of new antimicrobial compounds from these plant extracts is seen as a potential resolve to the pressing problem of antimicrobial resistance.
{"title":"Anti-microbial Properties of Selected Plant Leaf Extracts Against Aspergillus niger (van Tieghem), Pseudomonas aeruginosa (Schroeter) and Staphylococcus aureus (Rosenbach)","authors":"Melanie M. Garcia","doi":"10.52751/cnfq9322","DOIUrl":"https://doi.org/10.52751/cnfq9322","url":null,"abstract":"With growing reports of multidrug-resistant pathogens causing untreatable human infections, the need for new antimicrobial therapies is becoming increasingly important. This study was conducted to investigate the antimicrobial properties of the leaf extracts of Premna odorata Blanco, Petersianthus quadrialatus Merr., Shorea astylosa Foxw., and Tridax procumbens Linn. The medicinal importance of these plants remains understudied despite their abundant distribution and endemism in the Philippines. A disk diffusion assay was utilized to test the antimicrobial properties of T. procumbens leaf extract against Pseudomonas aeruginosa and Staphylococcus aureus. On the one hand, the fungal colony and spore germination assay was used to test P. odorata, P. quadrialatus, and S. astylosa leaf extracts against Aspergillus niger. Different concentrations of leaf extracts were prepared and compared with positive and negative controls. T. procumbens minimally inhibits the growth of P. aeruginosa (10 mm) and S. aureus (10 mm), while S. astylosa leaf extracts revealed the most significant inhibition on colony growth (5.38 mm) and spore germination (15). P. odorata and P. quadrialatus showed the least (28.35 mm; 82.17) and moderate (10.97 mm; 49.5) inhibitory potentials, respectively. The discovery of new antimicrobial compounds from these plant extracts is seen as a potential resolve to the pressing problem of antimicrobial resistance.","PeriodicalId":429775,"journal":{"name":"Central Mindanao University Journal of Science","volume":"54 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114552024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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