Benewinde' Sawadogo, Sandrine Hien, Dagoro Pale, Y. Maiga, M. Nikiéma, Illiassou Mogmenga, Y. Dabiré, C. Ouattara, A. Ouattara
Natural environments like termite mounds can be a reservoir for novel microbial strains and antimicrobial metabolite producers. Hence, this study aimed to investigate the antimicrobial activities of bacterial strains isolated from Macrotermes bellicosus (M. bellicosus) termite mound materials. These materials were sampled from active termite mounds in the Somgandé botanic reserve in Ouagadougou, Burkina Faso. The study collected sixty-three bacterial isolates and assessed their antimicrobial activity against several pathogenic bacteria (Bacillus subtilis, Escherichia coli, Micrococcus luteus, Pseudomonas aeruginosa and Staphylococcus aureus) and two pathogenic fungi (Aspergillus niger and Candida albicans). The dual culture and paper disc diffusion assays revealed that 10 isolates (5 bacteria and 5 actinobacteria) inhibited the growth of at least one pathogenic microorganism. In comparison, four isolates inhibited both Gram-positive and Gram-negative bacteria. Overall, isolates MBm2, MBm8 (bacteria), and MBm26 (actinobacterium) displayed better antibacterial- and antifungal activity against all tested pathogenic microorganisms. It is germane to indicate here that several typical bacteria and actinobacteria isolated from the M. bellicosus termite mound materials were good producers of antibacterial and antifungal agents. Thus, future studies could further characterize these isolates and optimize their growth for producing antimicrobial compounds. The bioactive compounds should also be identified for further biotechnological applications.
{"title":"Antimicrobial Activity of Bacterial Strains Isolated from Macrotermes belli-cosus Termite Mound","authors":"Benewinde' Sawadogo, Sandrine Hien, Dagoro Pale, Y. Maiga, M. Nikiéma, Illiassou Mogmenga, Y. Dabiré, C. Ouattara, A. Ouattara","doi":"10.11594/jtls.13.01.17","DOIUrl":"https://doi.org/10.11594/jtls.13.01.17","url":null,"abstract":"Natural environments like termite mounds can be a reservoir for novel microbial strains and antimicrobial metabolite producers. Hence, this study aimed to investigate the antimicrobial activities of bacterial strains isolated from Macrotermes bellicosus (M. bellicosus) termite mound materials. These materials were sampled from active termite mounds in the Somgandé botanic reserve in Ouagadougou, Burkina Faso. The study collected sixty-three bacterial isolates and assessed their antimicrobial activity against several pathogenic bacteria (Bacillus subtilis, Escherichia coli, Micrococcus luteus, Pseudomonas aeruginosa and Staphylococcus aureus) and two pathogenic fungi (Aspergillus niger and Candida albicans). The dual culture and paper disc diffusion assays revealed that 10 isolates (5 bacteria and 5 actinobacteria) inhibited the growth of at least one pathogenic microorganism. In comparison, four isolates inhibited both Gram-positive and Gram-negative bacteria. Overall, isolates MBm2, MBm8 (bacteria), and MBm26 (actinobacterium) displayed better antibacterial- and antifungal activity against all tested pathogenic microorganisms. It is germane to indicate here that several typical bacteria and actinobacteria isolated from the M. bellicosus termite mound materials were good producers of antibacterial and antifungal agents. Thus, future studies could further characterize these isolates and optimize their growth for producing antimicrobial compounds. The bioactive compounds should also be identified for further biotechnological applications.","PeriodicalId":17638,"journal":{"name":"Journal of Tropical Life Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42296557","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 aimed to determine the phytochemical profiles,in vitroantioxidant and antiproliferative properties of KoreanCamellia mistletoe(Korthalsella japon-ica(Thunb.) Engl.) depending on the harvest time (August and November) and sol-vent (100% methanol, 70% ethanol, and hot water). TheCamellia japonicaL. mistle-toe extracts were analyzed for total phenol, flavonoid, carotenoid, and L-ascorbic acid contents and antioxidant properties such as scavenging capacities (1,1-diphenyl-2-pic-rylhydrazyl (DPPH) and NO•),ferrous ion chelating and reducing power. Concur-rently, the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) as-say was used to assess the antiproliferative properties against human cancer cell lines; MCF (human breast cancer cells), HeLa (human cervical cancer cells), A375 (human malignant melanoma cells), HCT116 (human colon cancer cells), HepG2 (human liver cancer cells) and A549 (human non-small cell lung adenocarcinoma cells). The results showed that extraction solvent and harvest time had significant impacts on antioxidant and anticancer activities and selectivity for free phenolic compounds inCamellia ja-ponicaL. mistletoe. Among all the tested extracts, the highest amounts of total phe-nolic and total flavonoids content were found in ethanol extracts ofCamellia japon-icaL. mistletoe harvested in November, while the methanol extracts ofCamellia ja-ponicaL. mistletoe collected in August showed the highest contents of total carote-noids and L-ascorbic acidscompared to the other tested extracts. Additionally, the highest NO•radical scavenging activity was found in ethanol extracts, whereas the strongest DPPH radical scavenging activity was found in methanol extracts ofCamel-lia japonicaL. mistletoe harvested in November. Furthermore, methanol extracts showed much higher antiproliferative activity against all human cancer cells than eth-anol extracts ofCamellia japonicaL. mistletoe harvested in November. In conclusion, the antioxidant and anticancer properties ofCamellia japonicaL. mistletoe showed significant dependence on the extraction solvent type and harvest time. With optimum harvest time and extraction solvent, they boast a wide range of promising medical, pharmaceutical, and food applications
本研究旨在测定韩国山茶槲寄生（Korthalsella japon ica（Thunb.）Engl.）的植物化学特征、体外抗氧化和抗增殖特性取决于收获时间（8月和11月）和溶胶排放量（100%甲醇、70%乙醇和热水）。日本山茶花。分析了雾趾提取物的总酚、类黄酮、类胡萝卜素和L-抗坏血酸含量以及抗氧化性能，如清除能力（1,1-二苯基-2-苦基肼（DPPH）和NO•）、亚铁离子螯合和还原能力。同时，使用3-（4,5-二甲基噻唑-2-基）-2,5-二苯基溴化四唑鎓（MTT）as-say来评估其对人癌症细胞系的抗增殖特性；MCF（人乳腺癌症细胞）、HeLa（人癌症细胞）、A375（人恶性黑色素瘤细胞）、HCT116（人癌症细胞）、HepG2（人癌症细胞）和A549（人非小细胞肺腺癌细胞）。结果表明，提取溶剂和采收时间对山茶的抗氧化、抗癌活性和游离酚类化合物的选择性有显著影响。槲寄生。在所有试验提取物中，日本茶的乙醇提取物中总酚和总黄酮含量最高。槲寄生于11月收获，而辣椒的甲醇提取物。与其他测试提取物相比，8月份采集的槲寄生的总胡萝卜素和L-抗坏血酸含量最高。此外，乙醇提取物对NO•自由基的清除活性最高，而金银花甲醇提取物对DPPH的清除活性最强。槲寄生在十一月收获。此外，甲醇提取物对所有人癌症细胞的抗增殖活性远高于日本茶乙醇提取物。槲寄生在十一月收获。综上所述，研究了日本茶的抗氧化和抗癌作用。槲寄生表现出对提取溶剂类型和收获时间的显著依赖性。凭借最佳的收获时间和提取溶剂，它们具有广泛的医疗、制药和食品应用前景
{"title":"Effect of Extraction Solvent and Harvest Time on Recovery of Bioactive Com-pounds, Antioxidant and Cancer Cell Growth Inhibition Activities of Korean Ca-mellia mistletoe","authors":"M. Kim","doi":"10.11594/jtls.13.01.07","DOIUrl":"https://doi.org/10.11594/jtls.13.01.07","url":null,"abstract":"This study aimed to determine the phytochemical profiles,in vitroantioxidant and antiproliferative properties of KoreanCamellia mistletoe(Korthalsella japon-ica(Thunb.) Engl.) depending on the harvest time (August and November) and sol-vent (100% methanol, 70% ethanol, and hot water). TheCamellia japonicaL. mistle-toe extracts were analyzed for total phenol, flavonoid, carotenoid, and L-ascorbic acid contents and antioxidant properties such as scavenging capacities (1,1-diphenyl-2-pic-rylhydrazyl (DPPH) and NO•),ferrous ion chelating and reducing power. Concur-rently, the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) as-say was used to assess the antiproliferative properties against human cancer cell lines; MCF (human breast cancer cells), HeLa (human cervical cancer cells), A375 (human malignant melanoma cells), HCT116 (human colon cancer cells), HepG2 (human liver cancer cells) and A549 (human non-small cell lung adenocarcinoma cells). The results showed that extraction solvent and harvest time had significant impacts on antioxidant and anticancer activities and selectivity for free phenolic compounds inCamellia ja-ponicaL. mistletoe. Among all the tested extracts, the highest amounts of total phe-nolic and total flavonoids content were found in ethanol extracts ofCamellia japon-icaL. mistletoe harvested in November, while the methanol extracts ofCamellia ja-ponicaL. mistletoe collected in August showed the highest contents of total carote-noids and L-ascorbic acidscompared to the other tested extracts. Additionally, the highest NO•radical scavenging activity was found in ethanol extracts, whereas the strongest DPPH radical scavenging activity was found in methanol extracts ofCamel-lia japonicaL. mistletoe harvested in November. Furthermore, methanol extracts showed much higher antiproliferative activity against all human cancer cells than eth-anol extracts ofCamellia japonicaL. mistletoe harvested in November. In conclusion, the antioxidant and anticancer properties ofCamellia japonicaL. mistletoe showed significant dependence on the extraction solvent type and harvest time. With optimum harvest time and extraction solvent, they boast a wide range of promising medical, pharmaceutical, and food applications","PeriodicalId":17638,"journal":{"name":"Journal of Tropical Life Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45851203","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}
F. Sari, R. Samoedra, S. Pratama, Sri Rahayu, A. Soewondo, M. Natsir, Muhaimin Rifa’i
This research aims to analyze the effect of unripe sapodilla fruit extract on endogenous antioxidant expression in T1DM BALB/c mice and its free radical scavenging activity. Manilkara zapota extract (MzE) is an aqueous extract of unripe sapodilla fruit and was obtained by maceration and freeze-drying process. This study used 25 male BALB/c mice with 7-weeks-old of age. They were divided randomly into five groups (n=5) before treatment. A single high dose (145 mg/kg BW) of streptozotocin (STZ) was intraperitoneally injected to induce type 1 diabetes mellitus (T1DM). MzE was given orally once each day for 14 days. Liver cells were isolated and immunoassay with anti-superoxide dismutase (SOD) and anti-nuclear factor erythroid 2-related Factor 2 (Nrf2), and then the results were analyzed by flow cytometry. Diphenylpicrylhydrazyl (DPPH) assay was performed to analyze free radical scavenging. Data were analyzed statistically with one-way ANOVA (p<0.05). The result showed that the glucose levels in diabetic mice after MzE administration were significantly lower than in the DM group. MzE treatment increased the expression of Nrf2 and SOD in diabetic mice. MzE could scavenge DPPH with the IC50 value obtained at 48.35 μg/mL, while ascorbic acid as a control could scavenge DPPH with the IC50 value at 22.24 μg/mL. The increase in the scavenging activity is in line with the increase in extract concentration. In conclusion, this study revealed that MzE can be an endogenous antioxidant enhancer by improving the expression of Nrf-2, SOD and can inhibit free radicals as an exogenous antioxidant in T1DM
{"title":"Antioxidant Activity of Unripe Sapodilla Fruit Extract (Manilkara zapota L.) through Nrf2 and SOD Expression in Type 1 Diabetic Mice","authors":"F. Sari, R. Samoedra, S. Pratama, Sri Rahayu, A. Soewondo, M. Natsir, Muhaimin Rifa’i","doi":"10.11594/jtls.13.01.12","DOIUrl":"https://doi.org/10.11594/jtls.13.01.12","url":null,"abstract":"This research aims to analyze the effect of unripe sapodilla fruit extract on endogenous antioxidant expression in T1DM BALB/c mice and its free radical scavenging activity. Manilkara zapota extract (MzE) is an aqueous extract of unripe sapodilla fruit and was obtained by maceration and freeze-drying process. This study used 25 male BALB/c mice with 7-weeks-old of age. They were divided randomly into five groups (n=5) before treatment. A single high dose (145 mg/kg BW) of streptozotocin (STZ) was intraperitoneally injected to induce type 1 diabetes mellitus (T1DM). MzE was given orally once each day for 14 days. Liver cells were isolated and immunoassay with anti-superoxide dismutase (SOD) and anti-nuclear factor erythroid 2-related Factor 2 (Nrf2), and then the results were analyzed by flow cytometry. Diphenylpicrylhydrazyl (DPPH) assay was performed to analyze free radical scavenging. Data were analyzed statistically with one-way ANOVA (p<0.05). The result showed that the glucose levels in diabetic mice after MzE administration were significantly lower than in the DM group. MzE treatment increased the expression of Nrf2 and SOD in diabetic mice. MzE could scavenge DPPH with the IC50 value obtained at 48.35 μg/mL, while ascorbic acid as a control could scavenge DPPH with the IC50 value at 22.24 μg/mL. The increase in the scavenging activity is in line with the increase in extract concentration. In conclusion, this study revealed that MzE can be an endogenous antioxidant enhancer by improving the expression of Nrf-2, SOD and can inhibit free radicals as an exogenous antioxidant in T1DM","PeriodicalId":17638,"journal":{"name":"Journal of Tropical Life Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46549887","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}
N. Mahat, A. Alwi, F. Salleh, S. Ishar, M. Kamaluddin, M. Rashid
The forensic DNA profiling technique has tremendously contributed to forensic human identification, an important aspect in forensic investigations. In instances whereby comparison samples are unavailable, utilization of short tandem repeats of X chromosome (X-STRs) may prove useful to resolve complex kinship investigations involving missing persons and mass disasters. Despite such evidential values, the use of X-STRs during investigations remains scarce in many Southeast Asian countries including Malaysia, requiring concerted efforts for establishing forensic statistical support for its diverse populations (especially the admixture populations), standardizing core loci and procedure, improving the knowledge among practitioners as well as developing suitable standard operating procedure for incorporating X-STRs analysis in the overall DNA profiling framework. Hence, this review paper aims to highlight the developments, applications and population data of X-STRs, as well as its challenges and future insights for forensic casework.
{"title":"Applications of X-Chromosome Short Tandem Repeats for Human Identification: A Review","authors":"N. Mahat, A. Alwi, F. Salleh, S. Ishar, M. Kamaluddin, M. Rashid","doi":"10.11594/jtls.13.01.19","DOIUrl":"https://doi.org/10.11594/jtls.13.01.19","url":null,"abstract":"The forensic DNA profiling technique has tremendously contributed to forensic human identification, an important aspect in forensic investigations. In instances whereby comparison samples are unavailable, utilization of short tandem repeats of X chromosome (X-STRs) may prove useful to resolve complex kinship investigations involving missing persons and mass disasters. Despite such evidential values, the use of X-STRs during investigations remains scarce in many Southeast Asian countries including Malaysia, requiring concerted efforts for establishing forensic statistical support for its diverse populations (especially the admixture populations), standardizing core loci and procedure, improving the knowledge among practitioners as well as developing suitable standard operating procedure for incorporating X-STRs analysis in the overall DNA profiling framework. Hence, this review paper aims to highlight the developments, applications and population data of X-STRs, as well as its challenges and future insights for forensic casework.","PeriodicalId":17638,"journal":{"name":"Journal of Tropical Life Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47268569","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}
Celosia cristata, an edible ornamental plant, is a potential floricultural commodity that needs further improvement to increase its agro-morphological characters and polyphenol content. Induced mutagenesis using ethyl methane sulphonate (EMS) is an effective tool to increase genetic diversity that has been applied in many plant species. This study aimed to assess the morphological diversity, polyphenol content, and antioxidant activities of C. cristata mutagenized by EMS in the M2 generation. A total of 230 M2 plants generated from the M1 generation were evaluated in this study and the polyphenols content and antioxidant activities analysis were conducted on fifteen selected M2 plants. Polyphenols content was analyzed using the Folin-Ciocalteu method and colorimetric method with slight modification, and the antioxidant activities investigated using 2,2’-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay and ferric reducing antioxidant power (FRAP) assay with minor changes. There are six subpopulations with the highest diversity of quantitative characters in the M2 population in quantitative characters, i.e. C2-17-1.0%, C2-1-0.7%, C2-20-2.0%, C2-25-0.7%, C2-1-0.9%, and C2-1-0.7%. Changes in the shape and color of leaves, stems, and flowers of C. cristata were also observed in the M2 population. C2.1, C2.6, and C2.12. 2.1, C2.6, and C2.12 are potential plants derived from EMS mutagenesis with the highest polyphenol content and antioxidant capacity in the M2 population. In conclusion, induced mutation using EMS can enhance the agro-morphological diversity, polyphenols content along with the antioxidant activities of C. cristata, and demonstrate the successful mutation breeding program.
{"title":"The Analysis of Morphological Diversity and Polyphenols Content of Celosia cristata in M2 Population Induced by Ethyl Methane Sulphonate","authors":"S. Aisyah, Y. Yudha, D. Sukma, W. Nurcholis","doi":"10.11594/jtls.13.01.11","DOIUrl":"https://doi.org/10.11594/jtls.13.01.11","url":null,"abstract":"Celosia cristata, an edible ornamental plant, is a potential floricultural commodity that needs further improvement to increase its agro-morphological characters and polyphenol content. Induced mutagenesis using ethyl methane sulphonate (EMS) is an effective tool to increase genetic diversity that has been applied in many plant species. This study aimed to assess the morphological diversity, polyphenol content, and antioxidant activities of C. cristata mutagenized by EMS in the M2 generation. A total of 230 M2 plants generated from the M1 generation were evaluated in this study and the polyphenols content and antioxidant activities analysis were conducted on fifteen selected M2 plants. Polyphenols content was analyzed using the Folin-Ciocalteu method and colorimetric method with slight modification, and the antioxidant activities investigated using 2,2’-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay and ferric reducing antioxidant power (FRAP) assay with minor changes. There are six subpopulations with the highest diversity of quantitative characters in the M2 population in quantitative characters, i.e. C2-17-1.0%, C2-1-0.7%, C2-20-2.0%, C2-25-0.7%, C2-1-0.9%, and C2-1-0.7%. Changes in the shape and color of leaves, stems, and flowers of C. cristata were also observed in the M2 population. C2.1, C2.6, and C2.12. 2.1, C2.6, and C2.12 are potential plants derived from EMS mutagenesis with the highest polyphenol content and antioxidant capacity in the M2 population. In conclusion, induced mutation using EMS can enhance the agro-morphological diversity, polyphenols content along with the antioxidant activities of C. cristata, and demonstrate the successful mutation breeding program.","PeriodicalId":17638,"journal":{"name":"Journal of Tropical Life Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45658905","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}
N. Sulistyani, Nurkhasanah Mahfudh, R. Umar, M. Mantali
Bangle rhizome and purple sweet potato could be used as functional food to overcome health problems such as hyperlipidemia. The anti-hyperlipidemic, nutritional properties of the above-said root vegetables could be formulated into a more community-preferred food in the form of biscuits. For this reason, this study aims to formulate biscuits from the mixed flour of bangle rhizome and purple sweet potato. Next, the prepared product's antioxidant activity and lipid-lowering properties are tested in vivo in high-fat diet-induced Wistar rats. In this study, bangle rhizome and purple sweet potato were turned into flour and formulated into three types of biscuits comprising different ratios of bangle rhizome and purple sweet potato flour (5:39 % w/w (F1), 3:41 % w/w (F2), and 2:42 % w/w (F3)). The study found that the baked products showed good organoleptic and physical properties, yielding golden- to brown-colored biscuits with a distinctive aroma and vaguely bitter after-taste, with F3 showing the highest hardness (8.94 0.18). The proximate analysis test showed that the biscuits achieved three of the six SNI 01-2973-2011 quality requirements. The best formula (F3) exhibited acceptable in vivo antioxidant catalase (5.12 0.16 U/mL) and glutathione peroxidase activity (64.44 2.11 U/mg) in high-fat diet Wistar rats tested for 28 days. The F3 formula was deemed the best, yielding biscuits with low moisture content and good crispiness. The formulated biscuits increased catalase's antioxidant activity (285.47%) and glutathione peroxidase (265.08%) more than the negative control. Hence, the study demonstrated that bangle rhizome and purple sweet potato-containing biscuits were potentially useful functional foods for improving antioxidant activity in high-fat diet-induced Wistar rats.
{"title":"Development of Bangle Rhizome and Purple Sweet Potato Flour Biscuit and Its in vivo Antioxidant Activity in High-Fat Diet-Induced Rats","authors":"N. Sulistyani, Nurkhasanah Mahfudh, R. Umar, M. Mantali","doi":"10.11594/jtls.13.01.05","DOIUrl":"https://doi.org/10.11594/jtls.13.01.05","url":null,"abstract":"Bangle rhizome and purple sweet potato could be used as functional food to overcome health problems such as hyperlipidemia. The anti-hyperlipidemic, nutritional properties of the above-said root vegetables could be formulated into a more community-preferred food in the form of biscuits. For this reason, this study aims to formulate biscuits from the mixed flour of bangle rhizome and purple sweet potato. Next, the prepared product's antioxidant activity and lipid-lowering properties are tested in vivo in high-fat diet-induced Wistar rats. In this study, bangle rhizome and purple sweet potato were turned into flour and formulated into three types of biscuits comprising different ratios of bangle rhizome and purple sweet potato flour (5:39 % w/w (F1), 3:41 % w/w (F2), and 2:42 % w/w (F3)). The study found that the baked products showed good organoleptic and physical properties, yielding golden- to brown-colored biscuits with a distinctive aroma and vaguely bitter after-taste, with F3 showing the highest hardness (8.94 0.18). The proximate analysis test showed that the biscuits achieved three of the six SNI 01-2973-2011 quality requirements. The best formula (F3) exhibited acceptable in vivo antioxidant catalase (5.12 0.16 U/mL) and glutathione peroxidase activity (64.44 2.11 U/mg) in high-fat diet Wistar rats tested for 28 days. The F3 formula was deemed the best, yielding biscuits with low moisture content and good crispiness. The formulated biscuits increased catalase's antioxidant activity (285.47%) and glutathione peroxidase (265.08%) more than the negative control. Hence, the study demonstrated that bangle rhizome and purple sweet potato-containing biscuits were potentially useful functional foods for improving antioxidant activity in high-fat diet-induced Wistar rats.","PeriodicalId":17638,"journal":{"name":"Journal of Tropical Life Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64519816","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}
Alpha (α) and beta (β)-carotene are among the nutritious contents of bananas, with the unique feature of a high ratio of α-/β-carotene. Research on the gene and protein of the key enzymes determining the ratio of α-/β-carotene in bananas, namely lycopene beta cyclase (LCYB) and lycopene epsilon cyclase (LCYE), is currently not well defined. Hence, this study aimed to compare the characters of the LCYB and LCYE genes and their putative proteins from Musa acuminata 'DH-Pahang' and Musa balbisiana 'DH-PKW'. The corresponding nucleotide sequences from both species were aligned to detect similarities in the gene structure. Their protein products were characterized at the primary and tertiary levels. The phylogenetic tree was constructed based on nucleotide and protein sequences. The result showed that the gene structure between these two species is similar in LCYB in chromosome 9 but different in LCYB in chromosome 7 and LCYE. The presence of cis-acting regulatory elements in response to light dominated the 2000 nucleotide region of the 5'UTR of LCYB and LCYE genes in both species. Based on protein alignment and domain analysis, the NADB_Rossmann superfamily domain was detected in both LCYB and LCYE. Alignment of the three-dimensional protein structure showed a significant difference between MaLCYB.c07 and MbLCYB.c07 only. The phylogenetic tree based on protein sequences indicated the distant relationship of MaLCYB.c07 and MbLCYB.c07 with other LCYB ingroup OTUs. The results of this study could provide a molecular basis related to the exploration of bananas as a promising functional food to meet the needs of provitamin A.
{"title":"In Silico Characterization of Lycopene Beta Cyclase (LCYB) and Lycopene Epsilon Cyclase (LCYE) Genes from DH-Pahang (Musa acuminata, A Genome) and DH-PKW (Musa balbisiana, B Genome)","authors":"I. Wiprayoga, K. Meitha, F. Dwivany","doi":"10.11594/jtls.13.01.09","DOIUrl":"https://doi.org/10.11594/jtls.13.01.09","url":null,"abstract":"Alpha (α) and beta (β)-carotene are among the nutritious contents of bananas, with the unique feature of a high ratio of α-/β-carotene. Research on the gene and protein of the key enzymes determining the ratio of α-/β-carotene in bananas, namely lycopene beta cyclase (LCYB) and lycopene epsilon cyclase (LCYE), is currently not well defined. Hence, this study aimed to compare the characters of the LCYB and LCYE genes and their putative proteins from Musa acuminata 'DH-Pahang' and Musa balbisiana 'DH-PKW'. The corresponding nucleotide sequences from both species were aligned to detect similarities in the gene structure. Their protein products were characterized at the primary and tertiary levels. The phylogenetic tree was constructed based on nucleotide and protein sequences. The result showed that the gene structure between these two species is similar in LCYB in chromosome 9 but different in LCYB in chromosome 7 and LCYE. The presence of cis-acting regulatory elements in response to light dominated the 2000 nucleotide region of the 5'UTR of LCYB and LCYE genes in both species. Based on protein alignment and domain analysis, the NADB_Rossmann superfamily domain was detected in both LCYB and LCYE. Alignment of the three-dimensional protein structure showed a significant difference between MaLCYB.c07 and MbLCYB.c07 only. The phylogenetic tree based on protein sequences indicated the distant relationship of MaLCYB.c07 and MbLCYB.c07 with other LCYB ingroup OTUs. The results of this study could provide a molecular basis related to the exploration of bananas as a promising functional food to meet the needs of provitamin A.","PeriodicalId":17638,"journal":{"name":"Journal of Tropical Life Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46720728","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}
Essential oil mainly contains volatile constituents making it vulnerable upon exposure to the external environment. The encapsulation method is known to protect the bioac-tive components of the essential oil from damage, in which alginate was used as the hydrogel in this study. This work investigates the physicochemical stability of the pep-permint oil encapsulated within alginate beads (1.5% and 2.0%) during its five weeks of storage. Peppermint oil (PO) was added at four different weight ratios to alginate, which were 1:3, 1:2, 1:1, and 2:1. The encapsulation technique involves mixing algi-nate and oil using a homogeniser. Constituents profiling was done weekly using UV-Vis spectrophotometer and Gas chromatography-mass spectroscopy (GC-MS). Inves-tigation revealed that 1.5% (w/w) alginate in a weight ratio of 1:1 has the highest en-capsulation efficiency, which was 42.00%, while for 2.0% (w/w) alginate, the weight ratio of 1:2 gave a maximum encapsulation efficiency of 33.38%. Assessment of the beads' diameter with time showed little physical changes throughout storage time. The constituents profile of the oil indicates a decline in the chemical constituents between a pure sample and the encapsulated peppermint oil. This might be associated with the heat generated during mixing or exposure to the light during the preparation stage. Even so, the analysis of the encapsulated oil each week suggested no striking changes, indicating the stability of the peppermint oil encapsulated in the alginate beads.
{"title":"Assessing the Stability of Peppermint Oil Encapsulated in Hydrogel Beads","authors":"Nurjeha Wong","doi":"10.11594/jtls.13.01.06","DOIUrl":"https://doi.org/10.11594/jtls.13.01.06","url":null,"abstract":"Essential oil mainly contains volatile constituents making it vulnerable upon exposure to the external environment. The encapsulation method is known to protect the bioac-tive components of the essential oil from damage, in which alginate was used as the hydrogel in this study. This work investigates the physicochemical stability of the pep-permint oil encapsulated within alginate beads (1.5% and 2.0%) during its five weeks of storage. Peppermint oil (PO) was added at four different weight ratios to alginate, which were 1:3, 1:2, 1:1, and 2:1. The encapsulation technique involves mixing algi-nate and oil using a homogeniser. Constituents profiling was done weekly using UV-Vis spectrophotometer and Gas chromatography-mass spectroscopy (GC-MS). Inves-tigation revealed that 1.5% (w/w) alginate in a weight ratio of 1:1 has the highest en-capsulation efficiency, which was 42.00%, while for 2.0% (w/w) alginate, the weight ratio of 1:2 gave a maximum encapsulation efficiency of 33.38%. Assessment of the beads' diameter with time showed little physical changes throughout storage time. The constituents profile of the oil indicates a decline in the chemical constituents between a pure sample and the encapsulated peppermint oil. This might be associated with the heat generated during mixing or exposure to the light during the preparation stage. Even so, the analysis of the encapsulated oil each week suggested no striking changes, indicating the stability of the peppermint oil encapsulated in the alginate beads.","PeriodicalId":17638,"journal":{"name":"Journal of Tropical Life Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41884317","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}
Andrographis paniculata is widely used as a medicinal plant in many countries and andrographolide is the major bioactive compound extracted from A. paniculata leaf. This study purposely to optimize statistical andrographolide extraction using the accelerated solvent extraction (ASE) technique. The Box Behnken design (BBD) was chosen to determine the optimum ASE conditions for the extraction temperature (ºC), cycle number, and extraction time (min) to achieve the highest yield of andrographolide. The optimum ASE conditions were identified as: extraction temperature of 60 ºC, using 3 cycles and 5 min extraction time, with maximum conversion yield as high as 335.2 ± 0.2 mg/g determined by High Performance Liquid Chromatography (HPLC) with the squared correlation coefficients (R2) of 0.97. The findings revealed the ASE method significantly enhanced andrographolide extraction and agreed closely with the predicted value at 337.5 mg/g. Andrographolide was isolated by preparative HPLC technique. A. paniculata leaf extract and extracted andrographolide displayed moderate radical scavenging activity in 2, 2−Diphenyl−1−picrylhydrazyl hydrate (DPPH) assay with IC50 of 0.883 ± 1.597 mg/ml and 0.514 ± 0.285 mg/ml respectively as IC50 for ascorbic acid was 0.048 ± 0.004 mg/ml. A. paniculata extract and andrographolide inhibited the tyrosinase enzyme with IC50 of 0.749 ± 0.293 μg/ml and IC50 of 2.441 ± 2.026 μg/ml indicated stronger tyrosinase inhibition abilities than kojic acid, IC50 of 19.985 ± 0.557 μg/ml. These results suggest that A. paniculata leaf extract and andrographolide have greater potential as sources of biochemical compounds that can be used as skin depigmentation solutions.
{"title":"Antioxidant Activity of Andrographolide from Andrographis paniculataleaf and Its Extraction Optimization by using Accelerated Solvent Extraction","authors":"R. Adam, F. Ramli, M. Hamid, Roswanira Wahab","doi":"10.11594/jtls.13.01.16","DOIUrl":"https://doi.org/10.11594/jtls.13.01.16","url":null,"abstract":"Andrographis paniculata is widely used as a medicinal plant in many countries and andrographolide is the major bioactive compound extracted from A. paniculata leaf. This study purposely to optimize statistical andrographolide extraction using the accelerated solvent extraction (ASE) technique. The Box Behnken design (BBD) was chosen to determine the optimum ASE conditions for the extraction temperature (ºC), cycle number, and extraction time (min) to achieve the highest yield of andrographolide. The optimum ASE conditions were identified as: extraction temperature of 60 ºC, using 3 cycles and 5 min extraction time, with maximum conversion yield as high as 335.2 ± 0.2 mg/g determined by High Performance Liquid Chromatography (HPLC) with the squared correlation coefficients (R2) of 0.97. The findings revealed the ASE method significantly enhanced andrographolide extraction and agreed closely with the predicted value at 337.5 mg/g. Andrographolide was isolated by preparative HPLC technique. A. paniculata leaf extract and extracted andrographolide displayed moderate radical scavenging activity in 2, 2−Diphenyl−1−picrylhydrazyl hydrate (DPPH) assay with IC50 of 0.883 ± 1.597 mg/ml and 0.514 ± 0.285 mg/ml respectively as IC50 for ascorbic acid was 0.048 ± 0.004 mg/ml. A. paniculata extract and andrographolide inhibited the tyrosinase enzyme with IC50 of 0.749 ± 0.293 μg/ml and IC50 of 2.441 ± 2.026 μg/ml indicated stronger tyrosinase inhibition abilities than kojic acid, IC50 of 19.985 ± 0.557 μg/ml. These results suggest that A. paniculata leaf extract and andrographolide have greater potential as sources of biochemical compounds that can be used as skin depigmentation solutions.","PeriodicalId":17638,"journal":{"name":"Journal of Tropical Life Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43408175","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}
Adult Cerambycid (sub-family Prioninae) beetles are non-feeders. The present study aims to investigate and evaluate the gastrointestinal microbiota in long horn beetle Prionomma (Ancyloprotus) bigibbosum White (1853) (Coleoptera: Crambycidae: Prioninae: Prionini) gut. Scanning electron micrograph revealed the presence of abundant bacteria firmly attached to hindgut. The gut flora were isolated and screened on Carboxymethylcellulose (CMC) agar medium using CMC as sole carbon source. The cellulolytic activity was measured both qualitatively and quantitatively. Cellulolytic efficiency was assessed by DNS method. Potent cellulose degrader bacterial isolate was subjected to phenotypic and genotypic characterization. A Gram positive, non-motile, oxidase positive coccoid isolate designated as PBI9 was found to be efficient cellulose degrader. Based on 16S rRNA gene analysis, the isolate was found to be most closely related to Mammaliicoccus fleurettii, Mammaliicoccus stepanovicii and Mammaliicoccus lentus (99.24%, 99.17% and 99.17% respectively) and was identified as Mammaliicoccus sciuri (99.86% similarity) (NCBI Accession number MZ351443). This appears to be first study undertaking SEM of gut microbiota of longhorn beetle, P. bigibbosum and to report the P. bigibbosum gut as a novel source of cellulolytic bacteria. Keywords: Cerambycid, Mammaliicoccus sciuri, PBI9, Prionomma bigibbosum, Scanning Electron Microscope
{"title":"The Cellulolytic Bacteria Associated with Gut of Longhorn Beetle, Prionomma bigibbosum (Coleoptera: Cerambycidae): an Electron Microscopic Study","authors":"S. Biswas, D. Paul, A. Bhattacharjee","doi":"10.11594/jtls.12.03.09","DOIUrl":"https://doi.org/10.11594/jtls.12.03.09","url":null,"abstract":"Adult Cerambycid (sub-family Prioninae) beetles are non-feeders. The present study aims to investigate and evaluate the gastrointestinal microbiota in long horn beetle Prionomma (Ancyloprotus) bigibbosum White (1853) (Coleoptera: Crambycidae: Prioninae: Prionini) gut. Scanning electron micrograph revealed the presence of abundant bacteria firmly attached to hindgut. The gut flora were isolated and screened on Carboxymethylcellulose (CMC) agar medium using CMC as sole carbon source. The cellulolytic activity was measured both qualitatively and quantitatively. Cellulolytic efficiency was assessed by DNS method. Potent cellulose degrader bacterial isolate was subjected to phenotypic and genotypic characterization. A Gram positive, non-motile, oxidase positive coccoid isolate designated as PBI9 was found to be efficient cellulose degrader. Based on 16S rRNA gene analysis, the isolate was found to be most closely related to Mammaliicoccus fleurettii, Mammaliicoccus stepanovicii and Mammaliicoccus lentus (99.24%, 99.17% and 99.17% respectively) and was identified as Mammaliicoccus sciuri (99.86% similarity) (NCBI Accession number MZ351443). This appears to be first study undertaking SEM of gut microbiota of longhorn beetle, P. bigibbosum and to report the P. bigibbosum gut as a novel source of cellulolytic bacteria. Keywords: Cerambycid, Mammaliicoccus sciuri, PBI9, Prionomma bigibbosum, Scanning Electron Microscope","PeriodicalId":17638,"journal":{"name":"Journal of Tropical Life Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44724248","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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