Judul: Factors Influencing Food Waste Behavior in Generation Z Muslim Consumers in Padang City
Abstrak: Sebagai negara muslim, Indonesia menjadi penyumbang sampah sisa makanan (food waste) terbanyak kedua di dunia. Sumatera Barat sebagai salah salah satu provinsi di Indonesia yang memiliki semboyan “Adat Basandi Syarak, Syarak Basandi Kitabullah”, dan Kota Padang yang merupakan ibu kota nya merupakan penyumbang sampah sisa makanan yang tinggi. Penelitian ini bertujuan untuk menganalisis karakteristik responden dan faktor-faktor yang memengaruhi perilaku food waste behavior pada Generasi Z muslim di Kota Padang. Dalam penelitian ini menggunakan metode analisis deskriptif dan SEM-PLS dengan jumlah sampel sebanyak 210 responden. Hasil penelitian menunjukkan bahwa variabel attitude, perceived behavior control dan religious norm memiliki pengaruh signifikan terhadap intention not to food waste, lalu variabel habit memiliki pengaruh signifikan terhadap food waste behavior. Variabel lainnya seperti subjective norm, lack of concern, dan intention not to food waste tidak memiliki pengaruh yang signifikan. Oleh karena itu, pemerintahan setempat diharapkan dapat memberikan edukasi terkait dampak yang ditimbulkan dari perilaku membuang makanan., As a muslim country, Indonesia is the second largest contributor of food waste in the world. West Sumatra as one of the provinces in Indonesia which has the motto "Basandi Syarak Adat, Syarak Basandi Kitabullah", and the city of Padang which is the capital city is a high contributor of food waste. This study aims to analyze the characteristics of respondents and the factors that influence food waste behavior in Generation Z Muslims in Padang City. In this study using descriptive analysis methods and SEM-PLS with a total sample of 210 respondents. The results showed that the variable attitude, perceived behavior control and religious norms had a significant effect on the intention not to food waste, then the habit variable had a significant effect on food waste behavior. Other variables such as subjective norms, lack of concern, and intention not to waste food have no significant effect. Therefore, the local government is expected to be able to provide education regarding the impacts arising from the behavior of wasting food.
Keyword: religious norm, lack of concern, intention, behavior, Gen Z

Judul: Analisis Food Wasting Behavior Pada Generasi Z Muslim Pengguna Online food delivery
Abstrak: Sampah makanan mengalami peningkatan terus menerus setiap tahunnya. Dampak sampah makanan juga dapat memberikan pengaruh buruk bagi perekonomian suatu negara. Sampah makanan di Indonesia meningkat setiap tahunnya. Pada tahun 2022 sampah makanan di Indonesia mencapai 41,4 persen dari keseluruhan komposisi sampah nasional. Peningkatan sampah makanan diikuti dengan adanya perkembangan teknologi yang memengaruhi pola konsumsi masyarakat salah satunya dengan adanya layanan online food delivery. Layanan ini dinilai memiliki pengaruh terhadap peningkatan sampah makanan di Indonesia. Penelitian ini bertujuan menganalisis perilaku food wasting pada pengguna online food delivery generasi Z Muslim di Jawa Barat dengan pendekatan Theory of Planned Behavior (TPB). Penelitian ini menggunakan data primer dari 180 responden. Metode pengolahan data menggunakan analisis Structural Equation Modelling- Partial Least Square (SEM-PLS) dengan hasil yang didapatkan adalah terdapat hubungan positif signifikan antara variabel attitude dan perceived behavior control dengan intention. Variabel subjective norms tidak berpengaruh terhadap intention. Terdapat hubungan positif signifikan antara promotion dengan online food delivery dan perceived behavior control dengan food wasting behavior. Sedangkan variabel intention dan online food delivery tidak berpengaruh terhadap food wasting behavior., Food waste has increased continuously every year. The impact of food waste can also have a negative impact on a country's economy. Food waste in Indonesia increases every year. In 2022 food waste in Indonesia will reach 41,4 percent of the total composition of national waste. The increase in food waste is followed by technological developments that affect people's consumption patterns, one of which is the existence of online food delivery services. This service is considered to have an influence on increasing food waste in Indonesia. This study aims to analyze food wasting behavior among Z-generation Muslim online food delivery users in West Java using the Theory of Planned Behavior (TPB) approach. This study uses primary data from 180 respondents. The data processing method uses Structural Equation Modeling- Partial Least Square (SEM-PLS) analysis with the results obtained that there is a significant positive relationship between the attitude variable and perceived behavior control with intention. The subjective norms variable has no effect on intention. There is a significant positive relationship between promotion and online food delivery and perceived behavior control with food wasting behavior. Meanwhile, the variable intention and online food delivery have no effect on food wasting behavior.
Keyword: Food Waste, Online food delivery, SEM-PLS, TPB

Judul: Synthesis of Biphasic Calcium Phosphate Made of Eggshells Through A Hydrothermal Method
Abstrak: Biphasic Calcium Phosphate mixed of hydroxyapatite and tricalcium phosphate. A hydrothermal method of synthesizing by mixing CaO as calcium source and (NH4)2HPO4 as phosphate source with distilled water. CaO got from calcination process made of eggshells. All samples were synthesized using hydrothermal reactor then followed by sintering process. The molar ratio of Ca and P for all samples was 0.5 M : 0.3 M. Hydrothermal temperature and sintering temperature were variated they are 250 ºC, 300 ºC for hydrothermal and 800 ºC, 900 ºC, 1000 ºC for sintering, higher treatment temperature, tricalcium phosphate appears. Final results of synthesis were characterized by using X-ray Diffraction and Fourier Transform Infrared. X-ray Diffraction patterns was ecompared with database Join Committee on Powder Diffraction Standards and found tricalcium phosphate and hydoxyapatite.
Keyword: biphasic calcium phosphate, hydrothermal, hydroxyapatite, tricalcium phosphate