Pub Date : 2024-03-21DOI: 10.55003/cast.2024.258834
Mohammad Arafat Hossain, Jannatul Ferdous, Ripon Kumar Roy, Shah Mohammad Hisam Al Rabbi, Shahanaz Sultana, Mohammad Enamul Haque
Swarna rice cultivars (Indian cultivar) are widely grown in the northern part of Bangladesh because of their higher yield, drought tolerance, higher quality of grain and good plant appearance. Therefore, a study was conducted to observe genetic diversity among eight Swarna cultivars grown in Bangladesh. The genetic diversity of the cultivars was assessed by one hundred SSR (simple sequence repeat) markers. Among these, forty-four primers were polymorphic. In total, 188 alleles from eight rice genotypes with an average of 4.27 alleles per locus were identified. Allele numbers varied from 2 to 11. The average polymorphism information content (PIC) was 0.533, with a range of 0.195 to 0.889. The most suitable markers found were RM149, RM232, and RM3421, which provided the highest PIC value of 0.889. Genetic dissimilarity coefficient values between pairs indicated that the Guti Swarna and Nepali Swarna cultivars along with the Guti Swarna and Deshi Guti Swarna cultivars were the most genetically distant (0.818) cultivars whereas the Nepali Swarna and Nironjon Swarna cultivars were the closest (0.091). A dendrogram constructed based on polymorphism indicated five major groups. It was observed that the Guti Swarna and Sumon Swarna cultivars formed two different solitary groups, I and II whereas the Nepali Swarna and Nironjon Swarna formed group III, the Lal Swarna and Swarna5 constructed group IV, and the Deshi Guti Swarna and Tiger Indian Swarna were in group V. Our findings may help in designing appropriate cross combinations for further improvement of Swarna cultivars.
Swarna 水稻栽培品种（印度栽培品种）因产量高、耐旱、谷物品质好、植株外形美观而在孟加拉国北部广泛种植。因此，研究人员对孟加拉国种植的 8 个 Swarna 栽培品种的遗传多样性进行了观察。该研究通过 100 个 SSR（简单序列重复）标记对这些栽培品种的遗传多样性进行了评估。其中，44 个引物具有多态性。共鉴定出来自 8 个水稻基因型的 188 个等位基因，平均每个位点有 4.27 个等位基因。等位基因数从 2 到 11 不等。平均多态性信息含量（PIC）为 0.533，范围在 0.195 至 0.889 之间。最合适的标记是 RM149、RM232 和 RM3421，其 PIC 值最高，为 0.889。配对间的遗传异质性系数值表明，Guti Swarna 和 Nepali Swarna 栽培品种以及 Guti Swarna 和 Deshi Guti Swarna 栽培品种是遗传距离最远（0.818）的栽培品种，而 Nepali Swarna 和 Nironjon Swarna 栽培品种的遗传距离最近（0.091）。根据多态性构建的树枝图显示出五个主要群体。据观察，Guti Swarna 和 Sumon Swarna 栽培品种形成了两个不同的单独组，即 I 组和 II 组，而 Nepali Swarna 和 Nironjon Swarna 形成了 III 组，Lal Swarna 和 Swarna5 构建了 IV 组，Deshi Guti Swarna 和 Tiger Indian Swarna 属于 V 组。
{"title":"Assessing the Genetic Variation of Swarna rice (Oryza sativa L.) Cultivars using SSR marker","authors":"Mohammad Arafat Hossain, Jannatul Ferdous, Ripon Kumar Roy, Shah Mohammad Hisam Al Rabbi, Shahanaz Sultana, Mohammad Enamul Haque","doi":"10.55003/cast.2024.258834","DOIUrl":"https://doi.org/10.55003/cast.2024.258834","url":null,"abstract":"Swarna rice cultivars (Indian cultivar) are widely grown in the northern part of Bangladesh because of their higher yield, drought tolerance, higher quality of grain and good plant appearance. Therefore, a study was conducted to observe genetic diversity among eight Swarna cultivars grown in Bangladesh. The genetic diversity of the cultivars was assessed by one hundred SSR (simple sequence repeat) markers. Among these, forty-four primers were polymorphic. In total, 188 alleles from eight rice genotypes with an average of 4.27 alleles per locus were identified. Allele numbers varied from 2 to 11. The average polymorphism information content (PIC) was 0.533, with a range of 0.195 to 0.889. The most suitable markers found were RM149, RM232, and RM3421, which provided the highest PIC value of 0.889. Genetic dissimilarity coefficient values between pairs indicated that the Guti Swarna and Nepali Swarna cultivars along with the Guti Swarna and Deshi Guti Swarna cultivars were the most genetically distant (0.818) cultivars whereas the Nepali Swarna and Nironjon Swarna cultivars were the closest (0.091). A dendrogram constructed based on polymorphism indicated five major groups. It was observed that the Guti Swarna and Sumon Swarna cultivars formed two different solitary groups, I and II whereas the Nepali Swarna and Nironjon Swarna formed group III, the Lal Swarna and Swarna5 constructed group IV, and the Deshi Guti Swarna and Tiger Indian Swarna were in group V. Our findings may help in designing appropriate cross combinations for further improvement of Swarna cultivars.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":" 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140221021","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}
Pub Date : 2024-03-21DOI: 10.55003/cast.2024.258731
F. Fahrurrozi, N. Setyowati, S. Sudjatmiko, Zainal Muktramar, M. Chozin
The use of weed-based liquid organic fertilizers (LOFs) in organic Pak Choi production was expected to improve the effectiveness of solid organic fertilizers. Sequential vegetable planting has been practiced to improve the viability of the organic vegetable business. This research aimed to determine the effects of weed-based LOF on the yields of sequentially cropped organically grown Pak Choi. Field experiments were conducted in Rejang Lebong Highland, Indonesia, using complete randomized block design with three replicates, The first planting was in May 2021, and the second planting was in June 2021. Treatments were 0, 25, 50, 75, and 100 ppm of weed-based LOF. The results indicated that in each growing season the use of weed-based LOF had no effect on leaf number, shoot fresh weight, root fresh weight, shoot dry weight, root dry weight, and leaf greenness, as well as the N, P, K uptakes of Pak Choi. Nutrient (N, P and K) uptakes of Pak Choi in the second planting were 27.8%, 91.6% and 51.4% lower than those of the first planting, respectively. In addition, shoot fresh weight in the first planting was 56.2% higher than that found in the second planting. Nevertheless, the fresh weight of Pak Choi in both planting seasons was higher than in many studies and that of the Indonesian market standard for Pak Choi.
{"title":"Agronomical Performances of Sequential Planting Pak Choi (Brassica rapa subsp. chinensis L.) as Responses to Weed-based Liquid Organic Fertilizer","authors":"F. Fahrurrozi, N. Setyowati, S. Sudjatmiko, Zainal Muktramar, M. Chozin","doi":"10.55003/cast.2024.258731","DOIUrl":"https://doi.org/10.55003/cast.2024.258731","url":null,"abstract":"The use of weed-based liquid organic fertilizers (LOFs) in organic Pak Choi production was expected to improve the effectiveness of solid organic fertilizers. Sequential vegetable planting has been practiced to improve the viability of the organic vegetable business. This research aimed to determine the effects of weed-based LOF on the yields of sequentially cropped organically grown Pak Choi. Field experiments were conducted in Rejang Lebong Highland, Indonesia, using complete randomized block design with three replicates, The first planting was in May 2021, and the second planting was in June 2021. Treatments were 0, 25, 50, 75, and 100 ppm of weed-based LOF. The results indicated that in each growing season the use of weed-based LOF had no effect on leaf number, shoot fresh weight, root fresh weight, shoot dry weight, root dry weight, and leaf greenness, as well as the N, P, K uptakes of Pak Choi. Nutrient (N, P and K) uptakes of Pak Choi in the second planting were 27.8%, 91.6% and 51.4% lower than those of the first planting, respectively. In addition, shoot fresh weight in the first planting was 56.2% higher than that found in the second planting. Nevertheless, the fresh weight of Pak Choi in both planting seasons was higher than in many studies and that of the Indonesian market standard for Pak Choi.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":"104 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140223300","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}
Pub Date : 2024-03-20DOI: 10.55003/cast.2024.259576
Giap Pham Ngoc Tram, Tran Hong Quan, Tran Tieu Yen, Le Ngoc Vinh, Pensiri Kaewthong, S. Karnjanapratum
The effects of three pre-drying treatments including blanching in hot water (60oC-70oC for 3 and 5 min), soaking in NaCl (1-4% w/v for 10 and 20 min), and soaking in citric acid (0.2-0.8% w/v for 10 and 20 min) on dried Golden oyster mushroom (GOM) were studied. Color values (L*, a*, and b*), browning index (BI), polyphenol oxidase (PPO) activity, protein content, flavonoid content (FC), total phenolic content (TPC), and antioxidant activities (metal chelating activity and DPPH radical scavenging activity) of dried mushrooms were evaluated. All pretreated mushrooms had significantly higher lightness (L*) and lower a* and b* values compared to those of un-pretreated ones. Decreases in BI and PPO activity were observed in pretreated mushrooms. Higher blanching temperatures, concentrations of NaCl and citric acid, and time yielded lower protein content, TPC, and FC. Among the pretreatments, the highest antioxidant activities were observed in citric acid treated GOM. Thus, blanching and chemical pretreatments could enhance the lightness and lower BI of dried GOM, although they lowered the nutrient levels and antioxidant activities of the dried GOM.
{"title":"Impact of Pre-drying Treatments on Antioxidant Activities and Quality of Dried Golden Oyster Mushroom (Pleurotus citrinopileatus)","authors":"Giap Pham Ngoc Tram, Tran Hong Quan, Tran Tieu Yen, Le Ngoc Vinh, Pensiri Kaewthong, S. Karnjanapratum","doi":"10.55003/cast.2024.259576","DOIUrl":"https://doi.org/10.55003/cast.2024.259576","url":null,"abstract":"The effects of three pre-drying treatments including blanching in hot water (60oC-70oC for 3 and 5 min), soaking in NaCl (1-4% w/v for 10 and 20 min), and soaking in citric acid (0.2-0.8% w/v for 10 and 20 min) on dried Golden oyster mushroom (GOM) were studied. Color values (L*, a*, and b*), browning index (BI), polyphenol oxidase (PPO) activity, protein content, flavonoid content (FC), total phenolic content (TPC), and antioxidant activities (metal chelating activity and DPPH radical scavenging activity) of dried mushrooms were evaluated. All pretreated mushrooms had significantly higher lightness (L*) and lower a* and b* values compared to those of un-pretreated ones. Decreases in BI and PPO activity were observed in pretreated mushrooms. Higher blanching temperatures, concentrations of NaCl and citric acid, and time yielded lower protein content, TPC, and FC. Among the pretreatments, the highest antioxidant activities were observed in citric acid treated GOM. Thus, blanching and chemical pretreatments could enhance the lightness and lower BI of dried GOM, although they lowered the nutrient levels and antioxidant activities of the dried GOM.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":"92 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140224918","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}
Pub Date : 2024-03-20DOI: 10.55003/cast.2024.259441
Tatpicha Aowpitaya, Rungarun Sasanatayart
In this study, gelatin-based films incorporated with two plant pigments; butterfly pea flower anthocyanins (BPA) and turmeric rhizome curcuminoids (TRC) were prepared. Their physical and antioxidant properties were investigated. The results showed that addition of BPA and TRC at different concentrations (10%, 20%, and 30% of gelatin weight) significantly affected the visible color and color values (L*, a*, b*, hue and chroma) of the obtained films. With increasing pigment concentrations, lower % light transmittance was observed (p<0.05). The improved light barrier property corresponded with the increased opacity of the two films (p<0.05). Compared with the control films, the addition of either BPA or TRC slightly increased thickness of films (p<0.05). The moisture content of films increased with increasing BPA concentration but decreased with increasing TRC concentration (p<0.05). However, water solubility was not significantly different among films with varying concentrations of BPA or TRC (p>0.05). Total anthocyanin content (TAC), total curcuminoid content (TCC), total phenol content, and antioxidant activities by FRAP and DPPH increased with increasing pigment concentration in films (p<0.05). Based on in vitro digestion, the film forming solution containing 30% (w/w) plant pigment significantly improved the stability of pigment compounds, TPC, and antioxidant activities during the intestinal phase. Compared to the pigment extract alone, film forming solution containing gelatin and glycerol showed protecting effects against biological conditions during intestinal digestion of the two pigments, BPA and TRC, and therefore, offered greater stability of antioxidant activity (p<0.05).
{"title":"Properties of Gelatin-based Films Incorporated with Anthocyanins and Curcuminoids and Stability of Antioxidant Activity during In Vitro Digestion","authors":"Tatpicha Aowpitaya, Rungarun Sasanatayart","doi":"10.55003/cast.2024.259441","DOIUrl":"https://doi.org/10.55003/cast.2024.259441","url":null,"abstract":"In this study, gelatin-based films incorporated with two plant pigments; butterfly pea flower anthocyanins (BPA) and turmeric rhizome curcuminoids (TRC) were prepared. Their physical and antioxidant properties were investigated. The results showed that addition of BPA and TRC at different concentrations (10%, 20%, and 30% of gelatin weight) significantly affected the visible color and color values (L*, a*, b*, hue and chroma) of the obtained films. With increasing pigment concentrations, lower % light transmittance was observed (p<0.05). The improved light barrier property corresponded with the increased opacity of the two films (p<0.05). Compared with the control films, the addition of either BPA or TRC slightly increased thickness of films (p<0.05). The moisture content of films increased with increasing BPA concentration but decreased with increasing TRC concentration (p<0.05). However, water solubility was not significantly different among films with varying concentrations of BPA or TRC (p>0.05). Total anthocyanin content (TAC), total curcuminoid content (TCC), total phenol content, and antioxidant activities by FRAP and DPPH increased with increasing pigment concentration in films (p<0.05). Based on in vitro digestion, the film forming solution containing 30% (w/w) plant pigment significantly improved the stability of pigment compounds, TPC, and antioxidant activities during the intestinal phase. Compared to the pigment extract alone, film forming solution containing gelatin and glycerol showed protecting effects against biological conditions during intestinal digestion of the two pigments, BPA and TRC, and therefore, offered greater stability of antioxidant activity (p<0.05).","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":"346 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140227932","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}
Pub Date : 2024-03-20DOI: 10.55003/cast.2024.257493
I. Iswahyudi, Emmy Darmawati, S. Mardjan, M. P. Garfansa
Transportation vibration adversely affects fresh produce during transportation. In addition, storage temperature affects the quality of fresh commodities. The physical changes in Java apples during transportation and storage were evaluated in this study. Java apples were transported from local farms to wholesale markets (180 km). Java apples were stored at room temperature (28°C) for six days. Physical qualities such as weight loss and firmness of the Java apple samples were evaluated. The RGB image acquisition system was used to assess changes in the color of the Java apple. The vibration showed that more than 70% of the acceleration occurred between 220-290 cm/s2 in the vertical and horizontal directions during transportation. Analysis showed that physical qualities, such as weight loss and firmness, were strongly affected by the packaging used, vibration during transportation, and storage temperature. The weight loss and reduction in firmness was highest in Java apples transported using wholesaler packaging (packaging A). The lightness, yellowness, and hue values decreased significantly because transportation vibration was relatively high, and the Java apples were stored at room temperature. Redness, total color difference, and color index increased significantly in Java apples that were transported using package A and stored at room temperature. The results showed that the use of transportation packaging affected changes in the physical quality of Java apples. Packaging A generally increase in weight loss, hardness, and changes in fruit color than other packaging types.
{"title":"Color and Firmness Quality Changes of Java Apple During Postharvest Transportation and Storage","authors":"I. Iswahyudi, Emmy Darmawati, S. Mardjan, M. P. Garfansa","doi":"10.55003/cast.2024.257493","DOIUrl":"https://doi.org/10.55003/cast.2024.257493","url":null,"abstract":"Transportation vibration adversely affects fresh produce during transportation. In addition, storage temperature affects the quality of fresh commodities. The physical changes in Java apples during transportation and storage were evaluated in this study. Java apples were transported from local farms to wholesale markets (180 km). Java apples were stored at room temperature (28°C) for six days. Physical qualities such as weight loss and firmness of the Java apple samples were evaluated. The RGB image acquisition system was used to assess changes in the color of the Java apple. The vibration showed that more than 70% of the acceleration occurred between 220-290 cm/s2 in the vertical and horizontal directions during transportation. Analysis showed that physical qualities, such as weight loss and firmness, were strongly affected by the packaging used, vibration during transportation, and storage temperature. The weight loss and reduction in firmness was highest in Java apples transported using wholesaler packaging (packaging A). The lightness, yellowness, and hue values decreased significantly because transportation vibration was relatively high, and the Java apples were stored at room temperature. Redness, total color difference, and color index increased significantly in Java apples that were transported using package A and stored at room temperature. The results showed that the use of transportation packaging affected changes in the physical quality of Java apples. Packaging A generally increase in weight loss, hardness, and changes in fruit color than other packaging types.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140226432","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}
Pub Date : 2024-03-20DOI: 10.55003/cast.2024.258584
E. S. Palupi, Bambang Retnoaji, Pudji Astuti, F. Alamsyah, W. Taruno, R. Pratiwi
Angiogenesis is widely used in various therapies by promoting or inhibiting the formation of new blood vessels. The use of Alternating Current-Electric Fields (AC-EF) in Electro-Capacitive Cancer Therapy (ECCT) showed its potential as an anti-cancer device, and is characterized by its anti-proliferative and pro-apoptotic effects. However, the role of AC-EF in angiogenesis remains unclear. To investigate the effects of AC-EF on CAM angiogenesis, we used the ex ovo culture method of chorioallantoic membrane (CAM). A basic fibroblast growth factor (bFGF) dose of 30 ng/µL was administered as an exogenous growth factor. The ECCT device, generating AC-EF of 150 kHz and 18 Vpp, was exposed to the CAMs. Subsequently, the 24 CAMs of chick embryo were divided into four groups. Two groups were non-bFGF-induced CAM, while the other two were bFGF-induced CAM, and each group was exposed either with or without AC-EF. The vascularization was evaluated through macroscopic observation, while vascular endothelial growth factor A (VEGFA) gene expression was measured using qPCR. The data were statistically analyzed using ANOVA with GraphPad Prism 9.5. The results showed that an AC-EF exposure had no effects on normal CAM angiogenesis (P>0.05). Moreover, VEGFA gene expression did not show significant upregulation (P>0.05) in the bFGF-induced CAM with or without AC-EF exposure. Interestingly, the number of new blood vessels was significantly higher (P<0.05) in the bFGF-induced with AC-EF exposure than in the non-bFGF-induced group. In conclusion, AC-EF of ECCT did not affect normal angiogenesis. AC-EF may trigger CAM angiogenesis with bFGF induction. This observation suggested that AC-EF of intermediate frequency could enhance angiogenesis by administration of external growth factors, offering a potential avenue for addressing obstructive vascular conditions.
{"title":"Alternating Current-Electric Field Inducing Chorio Allantoic Membrane (CAM) Angiogenesis through Exogenous Growth Factor Intervention","authors":"E. S. Palupi, Bambang Retnoaji, Pudji Astuti, F. Alamsyah, W. Taruno, R. Pratiwi","doi":"10.55003/cast.2024.258584","DOIUrl":"https://doi.org/10.55003/cast.2024.258584","url":null,"abstract":"Angiogenesis is widely used in various therapies by promoting or inhibiting the formation of new blood vessels. The use of Alternating Current-Electric Fields (AC-EF) in Electro-Capacitive Cancer Therapy (ECCT) showed its potential as an anti-cancer device, and is characterized by its anti-proliferative and pro-apoptotic effects. However, the role of AC-EF in angiogenesis remains unclear. To investigate the effects of AC-EF on CAM angiogenesis, we used the ex ovo culture method of chorioallantoic membrane (CAM). A basic fibroblast growth factor (bFGF) dose of 30 ng/µL was administered as an exogenous growth factor. The ECCT device, generating AC-EF of 150 kHz and 18 Vpp, was exposed to the CAMs. Subsequently, the 24 CAMs of chick embryo were divided into four groups. Two groups were non-bFGF-induced CAM, while the other two were bFGF-induced CAM, and each group was exposed either with or without AC-EF. The vascularization was evaluated through macroscopic observation, while vascular endothelial growth factor A\u0000(VEGFA) gene expression was measured using qPCR. The data were statistically analyzed using ANOVA with GraphPad Prism 9.5. The results showed that an AC-EF exposure had no effects on normal CAM angiogenesis (P>0.05). Moreover, VEGFA gene expression did not show significant upregulation (P>0.05) in the bFGF-induced CAM with or without AC-EF exposure. Interestingly, the number of new blood vessels was significantly higher (P<0.05) in the bFGF-induced with AC-EF exposure than in the non-bFGF-induced group. In conclusion, AC-EF of ECCT did not affect normal angiogenesis. AC-EF may trigger CAM angiogenesis with bFGF induction. This observation suggested that AC-EF of intermediate frequency could enhance angiogenesis by administration of external growth factors, offering a potential avenue for addressing obstructive vascular conditions.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":"320 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140228270","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}
Pub Date : 2024-03-20DOI: 10.55003/cast.2024.259474
J. Artchomphoo, Suwat Rattanapan, Irfun Masaesa-i, Weerasak Taengphan, Diew Saijun
The production process of latex products requires the preparation of latex compounds by mixing latex with chemicals in a dispersion state. This experiment investigated the influence of added zinc oxide and silver nanoparticles on the properties of latex compounds and vulcanized rubber. It was found that increasing the amount of zinc oxide in the rubber compound resulted in a rise in the viscosity of the latex over the storage period. Increasing the zinc oxide content also led to a higher degree of crosslink noticed by a faster chloroform number determination of the vulcanization level and the opposite effect on the swell value of the rubber film with reduced swelling. The amount of 2.0 phr of ZnO as an activator gave the highest value of the tensile strength. The increasing amount of silver nanoparticles caused a decrease in the viscosity and exhibited a slower chloroform number with a decrease in the swelling of the rubber film. The amount of silver nanoparticles in the study period (0.0010-0.0022 phr) had little effect on mechanical properties but a significant effect on antibacterial activity. The 0.0010 phr of silver nanoparticles showed sufficient potential in inhibiting Staphylococcus aureus and Escherichia coli.
{"title":"Enhancing Latex Compounds and Vulcanized Rubber Properties with Silver Nanoparticles","authors":"J. Artchomphoo, Suwat Rattanapan, Irfun Masaesa-i, Weerasak Taengphan, Diew Saijun","doi":"10.55003/cast.2024.259474","DOIUrl":"https://doi.org/10.55003/cast.2024.259474","url":null,"abstract":"The production process of latex products requires the preparation of latex compounds by mixing latex with chemicals in a dispersion state. This experiment investigated the influence of added zinc oxide and silver nanoparticles on the properties of latex compounds and vulcanized rubber. It was found that increasing the amount of zinc oxide in the rubber compound resulted in a rise in the viscosity of the latex over the storage period. Increasing the zinc oxide content also led to a higher degree of crosslink noticed by a faster chloroform number determination of the vulcanization level and the opposite effect on the swell value of the rubber film with reduced swelling. The amount of 2.0 phr of ZnO as an activator gave the highest value of the tensile strength. The increasing amount of silver nanoparticles caused a decrease in the viscosity and exhibited a slower chloroform number with a decrease in the swelling of the rubber film. The amount of silver nanoparticles in the study period (0.0010-0.0022 phr) had little effect on mechanical properties but a significant effect on antibacterial activity. The 0.0010 phr of silver nanoparticles showed sufficient potential in inhibiting Staphylococcus aureus and Escherichia coli.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":"6 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140227580","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}
Pub Date : 2024-03-20DOI: 10.55003/cast.2024.259042
W. Sassuvun, P. Buranasiri, S. Wicharn, C. Puttharugsa, P. Limnonthakul, S. Limwichean, S. Plaipichit
This work involved comparing Raman signals obtained from two different Raman spectroscopy configurations, using two distinct noise reduction methods. The excitation light source was a laser diode with a wavelength of 532 nm. A long-pass filter and focusing lens were utilized to block the excited light from the source and concentrate the Raman signals due to their weaker nature compared to the excited light signals. Light of 532 nm wavelength was blocked during green laser diode illumination using a long-pass filter. Two configurations were studied: transmission Raman spectroscopy (TRS) and reflection Raman spectroscopy (RRS). Raman signals from both configurations were compared, and the boxcar averaging and Vancouver Raman algorithm (VRA) noise reduction methods were investigated and compared. The results showed that Raman signals from the transmission configuration were higher than those from the reflection configuration, and noise signals were effectively reduced using both the boxcar averaging and VRA methods.
{"title":"Evaluating Noise Reduction Methods for Raman Spectroscopy in Transmission and Reflection Configurations","authors":"W. Sassuvun, P. Buranasiri, S. Wicharn, C. Puttharugsa, P. Limnonthakul, S. Limwichean, S. Plaipichit","doi":"10.55003/cast.2024.259042","DOIUrl":"https://doi.org/10.55003/cast.2024.259042","url":null,"abstract":"This work involved comparing Raman signals obtained from two different Raman spectroscopy configurations, using two distinct noise reduction methods. The excitation light source was a laser diode with a wavelength of 532 nm. A long-pass filter and focusing lens were utilized to block the excited light from the source and concentrate the Raman signals due to their weaker nature compared to the excited light signals. Light of 532 nm wavelength was blocked during green laser diode illumination using a long-pass filter. Two configurations were studied: transmission Raman spectroscopy (TRS) and reflection Raman spectroscopy (RRS). Raman signals from both configurations were compared, and the boxcar averaging and Vancouver Raman algorithm (VRA) noise reduction methods were investigated and compared. The results showed that Raman signals from the transmission configuration were higher than those from the reflection configuration, and noise signals were effectively reduced using both the boxcar averaging and VRA methods.","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":"49 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140224079","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}
Current Applied Science and Technology journal published 90 articles in Vol. 23 Nos. 1-6. Figure 1 show details of comparison of submission, acceptance rate (%) and rejection rate (%) during 2020-2023. It can be seen that the rejection rate is increased due to an increase of manuscripts submitted. The acceptance rate and the rejection rate do not include “in process” and withdrawn manuscripts. A decline after pre-screening and after review are counted as the rejection rate. The top ten countries of authors submitting manuscripts to be published in the journal in 2023 are shown in Figure 2. The top three countries are Thailand, India and Indonesia. Figure 3 shows numbers of published articles from KMITL, other organizations in Thailand and overseas. For KMITL, School of Science published the most numbers (29 articles), followed by School of Agricultural Technology (8 articles) and College of Materials Innovation and Technology (7 articles). For other organizations in Thailand (except KMITL), King Mongkut’s University of Technology Thonburi published the most (12 articles), followed by Mahasarakham University (11 articles) and Silpakorn University (9 articles). When the average duration process for publication during 2021-2023, as shown in Figure 4, are compared, it is found that the process time in 2023 is shorter than in 2022. For citation, Category and CiteScore rank in Scopus are presented in Table 1. For CiteScore rank in the year 2023, there are three subcategories in Q3, i.e. Agricultural and Biological Sciences (miscellaneous), Agronomy and Crop Science and Environmental Engineering.
{"title":"Current Applied Science and Technology Annual Report 2023","authors":"Assoc. Prof. Dr. Dusanee Thanaboripat","doi":"10.55003/cast.2024.0016","DOIUrl":"https://doi.org/10.55003/cast.2024.0016","url":null,"abstract":" Current Applied Science and Technology journal published 90 articles in Vol. 23 Nos. 1-6. Figure 1 show details of comparison of submission, acceptance rate (%) and rejection rate (%) during 2020-2023. It can be seen that the rejection rate is increased due to an increase of manuscripts submitted. The acceptance rate and the rejection rate do not include “in process” and withdrawn manuscripts. A decline after pre-screening and after review are counted as the rejection rate. The top ten countries of authors submitting manuscripts to be published in the journal in 2023 are shown in Figure 2. The top three countries are Thailand, India and Indonesia. Figure 3 shows numbers of published articles from KMITL, other organizations in Thailand and overseas. For KMITL, School of Science published the most numbers (29 articles), followed by School of Agricultural Technology (8 articles) and College of Materials Innovation and Technology (7 articles). For other organizations in Thailand (except KMITL), King Mongkut’s University of Technology Thonburi published the most (12 articles), followed by Mahasarakham University (11 articles) and Silpakorn University (9 articles). When the average duration process for publication during 2021-2023, as shown in Figure 4, are compared, it is found that the process time in 2023 is shorter than in 2022. For citation, Category and CiteScore rank in Scopus are presented in Table 1. For CiteScore rank in the year 2023, there are three subcategories in Q3, i.e. Agricultural and Biological Sciences (miscellaneous), Agronomy and Crop Science and Environmental Engineering. ","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":"16 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140264345","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}
Pub Date : 2023-12-18DOI: 10.55003/cast.2023.258411
Ekene John Nweze, Timothy Prince Chidike Ezeorba, Emmanuel S Okeke, Tobechukwu Christian Ezike, Chijioke Nwuga
The roasting of food is one of the oldest food preparation and preservation technologies. Although roasted foods have been associated with potential health hazards, this processing method is still used in many foods. This study was carried out to ascertain the health risks of ingesting white (Dioscorea rotundata), and bitter yam (Dioscorea dumetorum) roasted with firewood, charcoal, and charcoal augmented with PET bottles. The PAH content in all the roasted yam samples was identified and analyzed using gas chromatography-mass spectroscopy (GC-MS). A total of 8 PAHs were identified in both yam species; however, bitter yam roasted with augmented charcoal contained 9 PAHs. The total EDI showed that bitter yam roasted with augmented charcoal (6.59E-1) had the highest PAH content while white yam roasted with only charcoal contained the lowest (1.27E-1). The hazard quotients and indexes revealed that bitter yam had the highest HQ in all the roasting methods except for napathalene, fluoranthene and benzo (a) pyrene in samples roasted with charcoal. The HI for both species in all the roasting methods was above 1 (>1), while firewood produced the highest HI. Benzo (a) anthracene was the most potent PAH identified across the yam species and the roasting techniques. The evaluated ILCR showed that dibenzo (a, h) anthracene identified in white yam smoked with charcoal had the highest tendency to cause cancer (6.38E-1) while the least PAH was acenaphthylene (3.35E-6) which was seen in bitter yam roasted with charcoal. Therefore, it is necessary to inform the consumers of the possible health implications associated with consuming roasted yams and especially yam roasted with augmented charcoal
焙烤食品是最古老的食品制作和保存技术之一。尽管焙烤食品与潜在的健康危害有关，但许多食品仍在使用这种加工方法。本研究旨在确定摄入用木柴、木炭和用 PET 瓶添加的木炭烤制的白薯（薯蓣）和苦山药（薯蓣）对健康的风险。采用气相色谱-质谱法（GC-MS）对所有烤山药样本中的多环芳烃含量进行了鉴定和分析。在两种山药中总共鉴定出 8 种多环芳烃；但是，用添加木炭的苦山药含有 9 种多环芳烃。总 EDI 显示，用增量木炭焙烧的苦山药（6.59E-1）多环芳烃含量最高，而仅用木炭焙烧的白山药（1.27E-1）含量最低。危害商数和指数显示，在所有焙烧方法中，苦山药的 HQ 最高，但用木炭焙烧的样品中的萘，荧蒽和苯并（a）芘除外。 在所有焙烧方法中，这两个物种的 HI 都高于 1（>1），而木柴产生的 HI 最高。苯并 (a) 蒽是在所有山药品种和焙烧技术中鉴定出的最强多环芳烃。评估的 ILCR 显示，在用木炭熏制的白山药中发现的二苯并 (a, h) 蒽具有最高的致癌倾向（6.38E-1），而在用木炭烤制的苦山药中发现的苊（3.35E-6）是致癌倾向最低的多环芳烃。因此，有必要让消费者了解食用烤山药，特别是用增量木炭烤山药可能对健康造成的影响。
{"title":"Dietary Exposure to Polycyclic Aromatic Hydrocarbons and the Probabilistic Health Risk Assessment of Eating Roasted Yams (Dioscorea Species) by African Population","authors":"Ekene John Nweze, Timothy Prince Chidike Ezeorba, Emmanuel S Okeke, Tobechukwu Christian Ezike, Chijioke Nwuga","doi":"10.55003/cast.2023.258411","DOIUrl":"https://doi.org/10.55003/cast.2023.258411","url":null,"abstract":"The roasting of food is one of the oldest food preparation and preservation technologies. Although roasted foods have been associated with potential health hazards, this processing method is still used in many foods. This study was carried out to ascertain the health risks of ingesting white (Dioscorea rotundata), and bitter yam (Dioscorea dumetorum) roasted with firewood, charcoal, and charcoal augmented with PET bottles. The PAH content in all the roasted yam samples was identified and analyzed using gas chromatography-mass spectroscopy (GC-MS). A total of 8 PAHs were identified in both yam species; however, bitter yam roasted with augmented charcoal contained 9 PAHs. The total EDI showed that bitter yam roasted with augmented charcoal (6.59E-1) had the highest PAH content while white yam roasted with only charcoal contained the lowest (1.27E-1). The hazard quotients and indexes revealed that bitter yam had the highest HQ in all the roasting methods except for napathalene, fluoranthene and benzo (a) pyrene in samples roasted with charcoal. The HI for both species in all the roasting methods was above 1 (>1), while firewood produced the highest HI. Benzo (a) anthracene was the most potent PAH identified across the yam species and the roasting techniques. The evaluated ILCR showed that dibenzo (a, h) anthracene identified in white yam smoked with charcoal had the highest tendency to cause cancer (6.38E-1) while the least PAH was acenaphthylene (3.35E-6) which was seen in bitter yam roasted with charcoal. Therefore, it is necessary to inform the consumers of the possible health implications associated with consuming roasted yams and especially yam roasted with augmented charcoal","PeriodicalId":36974,"journal":{"name":"Current Applied Science and Technology","volume":"27 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138995204","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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