Herlinda Djohan - Academia.edu (original) (raw)
Papers by Herlinda Djohan
SENTRI: Jurnal Riset Ilmiah
Konsumsi dan permintaan telur ayam ras sangat tinggi dibanding bahan pangan yang mengandung prote... more Konsumsi dan permintaan telur ayam ras sangat tinggi dibanding bahan pangan yang mengandung protein hewani lainnya. Agar aman dikonsumsi dan terhindar dari kontaminasi bakteri dan virus BPOM menetapkan standar jumlah cemaran mikroba pada produk telur ayam ras yaitu <1 x 104 CFU/g. Semakin lama waktu penyimpanan akan mengakibatkan masuknya bakteri perusak dan terjadinya penguapan air dan gas melalui pori-pori. Adapun upaya untuk memperpanjang dan menjaga kebersihan telur cukup di lap dan tidak menggunakan air mengalir. Namun, masyarakat sering tidak memperhatikan jangka waktu penyimpanan telur dan kebersihan penyimpanan telur yang baik dan benar. Maka dilakukan pengujian tentang lamanya masa simpan telur dan kebersihan penyimpanan telur ayam ras terhadap cemaran mikroba. Penelitan ini menggunakan eksperimental semu dengan dua kelompok perlakuan dibersihkan dan tidak dibersihkan, keduanya disimpan selama 9-15 hari, lalu diuji menggunakan metode Total Plate Count (TPC) yaitu teknik ...
JURNAL INFO KESEHATAN, 2021
The processed oil from the coconut plant is generally understood as coconut oil. A method is requ... more The processed oil from the coconut plant is generally understood as coconut oil. A method is required to produce a product with a higher oil extraction rate and is able to reduce the water content and free fatty acids in the coconut oil production. It is also necessary to add substances that can delay or prevent fat oxidation reactions by generating substances in the form of antioxidants. The method that can be implemented is the enzymatic method employing the bromelain enzyme in a pineapple with the addition of an antioxidants substance from the kesum leaf. The objective of this research is to describe the quality of coconut oil after the addition of pineapple (ananas comosus) and kesum leaves (polygonus minus) extracts. The parameters for describing the quality of the oil are the organoleptic test, the degree of acidity, the oil extract rate, the peroxide number, the saponification number, and the acid number. This research is a quasi-experiment. The samples in this research were...
Indonesian Journal of Pure and Applied Chemistry, 2019
Flavonoid is one of the phenolic compounds that can complex metals. One of the native plants of I... more Flavonoid is one of the phenolic compounds that can complex metals. One of the native plants of Indonesia which has the potential as a metal complexor is the andong plant (Cordyline fruticosa (L.) A.Chev). The isolation process to obtain pure compound are extraction, fractionation, and separation by chromatography. Chromatography method using vacuum liquid chromatography (VLC), gravity column chromatography (GCC) and preparative thin layer chromatography (TLC). This research obtained relatively pure isolate F2.8. The IR (KBr) data on wave numbers of isolate F2.8 were 3430; 2925-2855; 1749; 1609-1512; 1171 and 1100 cm-1.The result of the spectrum 1H-NMR showed flavonoid compound has similar typical spectrum of apigenin compound which showed chemical shift (δH ppm) : 6.85 (1H, s, H-3); 6.29 (1H, s H-6); 6.57 (1H, H-8); 7.03 (2H, d, J = 11.96 Hz, H-3’, H-5’); 8.03 (2H, d, J = 11.72 Hz, H-2’, H-6’). The UV-Vis (CH3OH) spectrum data of isolate F2.8 after the addition of Fe2+ showed a shi...
SENTRI: Jurnal Riset Ilmiah
Konsumsi dan permintaan telur ayam ras sangat tinggi dibanding bahan pangan yang mengandung prote... more Konsumsi dan permintaan telur ayam ras sangat tinggi dibanding bahan pangan yang mengandung protein hewani lainnya. Agar aman dikonsumsi dan terhindar dari kontaminasi bakteri dan virus BPOM menetapkan standar jumlah cemaran mikroba pada produk telur ayam ras yaitu <1 x 104 CFU/g. Semakin lama waktu penyimpanan akan mengakibatkan masuknya bakteri perusak dan terjadinya penguapan air dan gas melalui pori-pori. Adapun upaya untuk memperpanjang dan menjaga kebersihan telur cukup di lap dan tidak menggunakan air mengalir. Namun, masyarakat sering tidak memperhatikan jangka waktu penyimpanan telur dan kebersihan penyimpanan telur yang baik dan benar. Maka dilakukan pengujian tentang lamanya masa simpan telur dan kebersihan penyimpanan telur ayam ras terhadap cemaran mikroba. Penelitan ini menggunakan eksperimental semu dengan dua kelompok perlakuan dibersihkan dan tidak dibersihkan, keduanya disimpan selama 9-15 hari, lalu diuji menggunakan metode Total Plate Count (TPC) yaitu teknik ...
JURNAL INFO KESEHATAN, 2021
The processed oil from the coconut plant is generally understood as coconut oil. A method is requ... more The processed oil from the coconut plant is generally understood as coconut oil. A method is required to produce a product with a higher oil extraction rate and is able to reduce the water content and free fatty acids in the coconut oil production. It is also necessary to add substances that can delay or prevent fat oxidation reactions by generating substances in the form of antioxidants. The method that can be implemented is the enzymatic method employing the bromelain enzyme in a pineapple with the addition of an antioxidants substance from the kesum leaf. The objective of this research is to describe the quality of coconut oil after the addition of pineapple (ananas comosus) and kesum leaves (polygonus minus) extracts. The parameters for describing the quality of the oil are the organoleptic test, the degree of acidity, the oil extract rate, the peroxide number, the saponification number, and the acid number. This research is a quasi-experiment. The samples in this research were...
Indonesian Journal of Pure and Applied Chemistry, 2019
Flavonoid is one of the phenolic compounds that can complex metals. One of the native plants of I... more Flavonoid is one of the phenolic compounds that can complex metals. One of the native plants of Indonesia which has the potential as a metal complexor is the andong plant (Cordyline fruticosa (L.) A.Chev). The isolation process to obtain pure compound are extraction, fractionation, and separation by chromatography. Chromatography method using vacuum liquid chromatography (VLC), gravity column chromatography (GCC) and preparative thin layer chromatography (TLC). This research obtained relatively pure isolate F2.8. The IR (KBr) data on wave numbers of isolate F2.8 were 3430; 2925-2855; 1749; 1609-1512; 1171 and 1100 cm-1.The result of the spectrum 1H-NMR showed flavonoid compound has similar typical spectrum of apigenin compound which showed chemical shift (δH ppm) : 6.85 (1H, s, H-3); 6.29 (1H, s H-6); 6.57 (1H, H-8); 7.03 (2H, d, J = 11.96 Hz, H-3’, H-5’); 8.03 (2H, d, J = 11.72 Hz, H-2’, H-6’). The UV-Vis (CH3OH) spectrum data of isolate F2.8 after the addition of Fe2+ showed a shi...