จำนวน Repository ( 1139 )
ฤทธิ์ต้านอนุมูลอิสระและปริมาณสารประกอบโพลีฟีนอลในผลิตภัณฑ์อาหารว่างเสริมผงใบหม่อน
The potential health benefits attributed to mulberry leaf and its bioactive compounds have led to a huge increase of mulberry leaf products in the food market. The objective of this research was to determine total antioxidant activities ( FRAP and DPPH assays) and polyphenol compounds in 4 snack products i.e. loaf-bread puifai (Thai steamed cupcakes) peakpoon (Green coconut sweet pudding) and snow skin mooncake fortified with 10% mulberry leaf powder from “ Buri Rum 60” cultivar. The result showed that antioxidant activities and polyphenol contents increased in 4 products fortified with mulberry leaf powder. Ferulic acid was the only phenolic compound found in all original products. Kaempferol quercetin and caffeic acid were significantly increased whereas ferulic acid was reduced in the modified formulas. Therefore these bioactive compounds properties of mulberry leaf powder suggested their possible use for fortifying the healthy foods.
การตรวจวัดปริมาณฟอสเฟตในน้ำผิวดินจังหวัดลพบุรี ด้วยระบบวิเคราะห์แบบไหลชนิดโฟลอินเจคชันอย่างง่าย
A simple flow injection analytical system for an automatic determination of phosphate in water samples using the molybdenum blue method was developed. Samples were injected and mixed with ascorbic acid used as a reducing agent. The absorbance of the resulting molybdenum blue complex was measured at 880 nm by a spectrophotometer. The optimal conditions of this system were 2 mL/min of carrier flow rate 1000 μL of sample volume 60 centimeters of mixing tube length and 0.020 mol/L of ascorbic acid. The proposed method showed reliability high sensitivity spend small amount of reagents and samples and fast sample throughput (52 samples/hour). The limit of detection (LOD) was 0.015 mg P/L of phosphate. Precision obtained injecting a phosphate standard solution of 0.50 mg P/L (n=10) was 1.81%. This system can be applied to determination of phosphate content in surface water samples in Lopburi province by comparing with a standard method. It was found that obtained from the developed system agreed well with the standard method using the pair t-test (tstat 0.04 < tcrit 2.36). This flow injection analysis system has no effect from arsenate and silicate interference for the analysis of natural water samples.
การทดแทนแป้งสาลีด้วยแป้งข้าวหอมนิลที่มีผลต่อลักษณะทางเคมีกายภาพ กิจกรรมการต้านออกซิเดชัน และการยอมรับทางประสาทสัมผัสของผลิตภัณฑ์หมั่นโถว
This study investigated the effects of partial replacement of wheat flours with Hom Nil rice flour on the physicochemical characteristics antioxidant activities and sensory acceptance of chinese steam bread (Mantou). Mantou was made with wheat flours partially substituted with Hom Nil rice flour at the level of 0% 10% 20% and 30%. Colour parameters (lightness (L*) redness (a*) and yellowness (b*)) of Mantou were measured using a Hunter colorimeter and found that L* andb* values of Mantou decreased while a* value increased with increase in level of Hom Nil rice flour from 0 to 30%. Physical characteristics including hardness springiness and cohesiveness of Mantou were significantly affected with substitution due to the disruption of dough structure. The hardness of Mantou increased with the increasing of the Hom Nil rice flour substitution (0%-30%) in contrast with springiness and cohesiveness. The total phenolic/anthocyanin contents and antioxidant activities (DPPH FRAP and ABTS) of Mantou increased with increasing Hom Nil rice flour level up to 30%. These results suggested that the substitution of 20 % Hom Nil rice flour would produce healthy and acceptable Mantou with higher total phenolic/anthocyanin contents and antioxidant activities.
แบบจำลองทางคณิตศาสตร์ เพื่อคำนวณต้นทุนการผลิต และการพยากรณ์พืชที่เหมาะสมแก่การเพาะปลูกตามศักยภาพของพื้นที่จังหวัดสุพรรณบุรี
The purpose of this research the study of the potential of Suphanburi area for planting investment. In which the researcher has studied the soil data set that is different in each area of Suphanburi. That is quite diverse if divided by each district in Suphanburi province themselves from the basic information report in Suphanburi and the agricultural information of Suphanburi for the year 2017 when comparing with the soil set of Suphanburi it can be seen that the cultivation is quite comprehensive all. The researcher created a model. Mathematical model to calculate production costs and forecasting of plants suitable for cultivation According to the potential of Suphanburi area. In the form of a website for ease of use as much as possible.
การใช้หลักปรัชญาเศรษฐกิจพอเพียงในการดำเนินชีวิตของผู้มีงานทำในกรุงเทพมหานคร
The purpose of this study is to study the 1) Demographic factors affecting the knowledge about the sufficiency economy philosophy of those employed persons in Bangkok. 2) Demographic factors affecting the use of sufficiency economy philosophy in the life of the person employed in Bangkok. 3) The relationship between knowledge about sufficiency economy philosophy and the use of sufficiency economy philosophy in the life of the employed persons in Bangkok. The samples in this research were 540 the employed persons in Bangkok selected by multistage random sampling. The research instrument was test with 10 items and questionnaires of rating scales with 30 items. The statistics used to analyze the data including the number and percentage mean standard deviation t - test for independent sample One-Way ANOVA Scheffe’s test analysis and simple correlation coefficients were statistical method to analyze data. The research found that: 1) Most of the respondents were female aged less than 35 years single status education level Bachelors degree career employees to a private company. The average monthly income of less than 35000 baht Hometown Central region. Have knowledge of the sufficiency economy philosophy at a moderate level. The sufficiency economy philosophy is applied to life at a high level. 2) Demographic factors affecting knowledge of the sufficiency economy philosophy include gender age education level occupation and average monthly income. Comparison results vary statistically significantly at a significant level of 0.05. 3) Demographic factors affecting the use of sufficiency economy philosophy in the life of those employed in Bangkok include gender age marital status education level occupation and average monthly income. Comparison results vary statistically significantly at a significant level of 0.05 4) The relationship between knowledge about sufficiency economy philosophy and the use of sufficiency economy philosophy in the life of the employed persons in Bangkok. There was a relationship that was not statistically significant. At a significance level 0.05