The objectives of this research were to study cellulose fiber extraction from rice straw with sodium hydroxide in various conditions (with 5 1 0 and 1 0 % of sodium hydroxide at room temperature 60ºC and 90 ºC for 0.5 1 2 and 3 hours) and to study rice straw nonwovens preparation by the wet-laid process. Oil wicking ability oil absorption ability air permeability morphology and physical properties of prepared nonwovens were investigated. It was found that the optimal condition for cellulose fiber extraction from rice straw was 5% of sodium hydroxide at 90 ºC for 2 hours. At this condition the cellulose fiber yield of 2 2% and the fiber length of 1 . 9 6 cm were obtained. The oil wicking ability and oil absorption ability of rice straw nonwovens increased when weight per unit area increased. Therefore oil absorbed into gaps between fibers of the nonwovens by capillary effect. Moreover the nonwovens could wick and absorb virgin palm oil better than fried palm oil because virgin palm oil has a lower viscosity than fried palm oil. The viscosity increased from derived lipid and other substances which dissolve and disperse increasing after frying food. The results indicated that the rice straw nonwovens had oil absorption ability.

The objective of this study is to obtain a model that maximize production of γ-linolenic acid (GLA) by the moss Physcomitrella patens employing response surface methodology (RSM). The RSM with a three-variables (sucrose potassium nitrate and glutamate concentrations) and five-level (-2 -1 0 1 and 2) central composite design (CCD) including 20 experimental runs was employed to optimize the medium composition. Results showed that the experimental data could be appropriately fitted into a second-order polynomial model with a coefficient of determination (R2) more than 0 .9 5 for GLA production. Analysis of variance (ANOVA) revealed that the model was highly significant (p<0.0001) and the effects of the sucrose (20-100 g/L) and glutamate (0.5-2.5 g/L) concentrations on GLA production were significant (p<0.05). The GLA production with the optimized culture medium (sucrose concentration of 62.92 g/L potassium nitrate of 0.80 g/L and glutamate concentration of 1 .4 2 g/L) by RSM increased 4.61 folds when compared with the standard BCD medium. This experimental value (16.37 mg GLA/L) fit well with the predicted values (16.20 mg GLA/L).

This research aimed to study the relationship between Corporate Governance Social Responsibility and Profitability of 56 companies related to the agriculture and food industry and listed on the Stock Exchange of Thailand. Data was collected for 2015 to 2020 and analyzed using descriptive statistics such as frequency percentage mean and standard deviation. Likewise this research also used inferential statistics including Pearson’s Correlation Analysis and Multiple Regression Analysis. The findings were Corporate Governance; Proportion of Independent Director (PID) had positively correlated with Profitability including the Return on Total Assets (ROA) the Return on Equity (ROE) and the Gross Profit Margin (GPM). The correlations were statistically significant at 0.01 and 0.05 levels. Besides Corporate Social Responsibility; the Environmental Social and Governance (ESG) and the Disclosure of Corporate Social Responsibility Activity (DCSRA) had also positively correlated with Profitability including the Return on Total Assets (ROA) the Return on Equity (ROE) and the Gross Profit Margin (GPM). The correlations were statistically significant at 0.01 and 0.05 levels.

Research on Restaurant Demand for Seniors in Bang Sue Dusit and Phra Nakhon Districts Bangkok The objective was to study consumer behavior of the elderly. Food demand for senior citizens in Bang Sue Dusit and Phra Nakhon districts Bangkok The population used in this study were 400 elderly people in Bang Sue Dusit and Bangkok areas. The survey instrument was a questionnaire. The statistics used were frequency frequency percentage mean standard deviation. Two-group mean difference test and One-way ANOVA Analysis of Variance. The results of the study found that most of the respondents were female. Age between 60 - 69 years marital status Most of them are working as government pensioners. and earn less than 10 000 baht. An analysis of the behavior of the elderlys restaurant use revealed that the elderlys behavior of using the restaurant when they are together with their family. The type of restaurant that the elderly use the most is national restaurant. The frequency of using the restaurant for the elderly most of the time. The elderly will go to the restaurant on Saturday - Sunday. The elderly tend to use the restaurant 2-3 people at a time. Access to restaurants more than 501 baht or more. Results of the analysis of restaurant needs for the elderly. Classified by service marketing mix it was found that the elderly had demand for restaurants classified by service marketing mix. Overall its at a high level. The elderly had the highest level of need for physical characteristics followed by personnel at the high level. and the price is at a high level respectively. The results of the hypothesis testing of restaurant demand for the elderly and demographic characteristics revealed that gender age and income were different. There are different restaurant needs for seniors. Analysis of 4Ps marketing strategy the shop must focus on producing fresh clean products and the food must be beneficial to the health of the elderly. and clear beverages suitable for the elderly in choosing to order food. Location the shop must have a convenient location for the elderly marketing promotion Organize promotional activities according to various festivals to meet the needs of the elderly. and clear beverages suitable for the elderly in choosing to order food. Location the shop must have a convenient location for the elderly marketing promotion Organize promotional activities according to various festivals to meet the needs of the elderly. and clear beverages suitable for the elderly in choosing to order food. Location the shop must have a convenient location for the elderly marketing promotion Organize promotional activities according to various festivals to meet the needs of the elderly.

Research subject Service marketing mix used to analyze restaurant business opportunities To support Chinese tourists the case study of Sathon Silom District has the objective to 1) study the service marketing mix used to analyze business opportunities in restaurants pubs and restaurants 2) to study business strategies in accordance with Chinese tourists behavior And 3) as a way to expand business opportunities For the Chinese tourists in the Sathorn Silom survey methods and data collection consists of surveying the area Uninterrupted observation And in-depth interviews Use the interview form And semi-structured questionnaires By the group of data providers which are Restaurant Pub and Restaurant Operator Chinese tourists Traders in the Sathorn Silom area specify specific selection criteria quality control data analysis triangulation. (Triangulation) inductive data analysis The research found that Service marketing mix that operators use to analyze business opportunities. Ordered by priority including 1) the service personnel 2) the service process 3) the physical characteristics of the store 4) the promotion of the market 5) the price 6) the distribution location and 7) the products for the business strategy. The research found that Most entrepreneurs use proactive strategies. Focusing on marketing promotion Especially public relations And advice from the tour guide With the operator offering a discount Sales promotion to tour leaders In order to bring relations for Chinese tourists to use the restaurant. Most entrepreneurs want government agencies Especially the Tourism Authority of Thailand (TAT) has relaxed regulations on entertainment. landmark To open more opportunities for tourism