Penggunaan Bahan Pengisi dalam Perbaikan Sifat Fisikokimia dan Organoleptik Dodol Buah Merah (Pandanus Conoideus L) sebagai Sumber β-Karoten

Permasalahan utama dalam pembuatan dodol buah merah, yaitu teksturnya lembek dan lunak. Pada penelitian ini dilakukan penambahan jenis tepung yang berbeda, yaitu tepung terigu, beras dan tapioka sebanyak 15 % (b/b) dari berat tepung ketan dan pasta buah merah. Dodol yang dihasilkan dilakukan pengamatan sifat fisikokimia dan ting- kat penerimaan panelis. Hasil penelitian menunjukkan bahwa dodol formula terbaik berdasarkan sifat organoleptik dan fisikokimia adalah dodol dengan penambahan tapioka. Dodol tersebut memiliki sifat organoleptik dengan skor kesukaan warna agak suka (5,40), rasa agak suka (5,05), aroma suka (6,05) dan tekstur agak suka (5,70), sifat fisik kekerasan dan kelengketan masing-masing 951,43 dan 216,68 gf, serta kekenyalan 0,35 %, juga memiliki sifat kimiadengan mengandung air dan total padatan masing-masing 37,86 % dan 62,14 % dengan tingkat ketersediaan air (a )0,83 dan kandungan β-karoten 1,02 ppm

Notas sobre a biologia de Centrolabrus caeruleus Azevedo, 1999 (Teleostei: Labridae)

Centrolabrus caeruleus is a recently described littoral fish whose biology is poorly known, despite the fact that it is very abundant in the Azores. This paper presents general information about the age and growth, food and reproduction of this species. Males grow to larger sizes than females, and there are sexual differences in colour and behaviour. Preliminary von Bertalanffy growth curves are given for both sexes, based on modal analysis of the monthly length-frequency distributions. The length-weight relationship is also given. Food is dominated by small phytal invertebrates. Reproduction occurs mainly between March and June. Young of the year are seen from July on. Territorial males build algal nests where females spawn. Details of nest building, and of the courtship and spawning behaviours are given

Electron microscopy of nanoparticle superlattice formation at a solid-liquid interface in nonpolar liquids

Nanoparticle superlattice films form at the solid-liquid interface and are important for mesoscale materials, but are notoriously difficult to analyze before they are fully dried. Here, the early stages of nanoparticle assembly were studied at solid-liquid interfaces using liquid-phase electron microscopy. Oleylamine-stabilized gold nanoparticles spontaneously formed thin layers on a silicon nitride (SiN) membrane window of the liquid enclosure. Dense packings of hexagonal symmetry were obtained for the first monolayer independent of the nonpolar solvent type. The second layer, however, exhibited geometries ranging from dense packing in a hexagonal honeycomb structure to quasi-crystalline particle arrangements depending on the dielectric constant of the liquid. The complex structures formed by the weaker interactions in the second particle layer were preserved, while the surface remained immersed in liquid. Fine-tuning the properties of the involved materials can thus be used to control the three-dimensional geometry of a superlattice including quasi-crystals

Paradoxical Pulmonary Event Under Tocilizumab Treatment for Systemic Sclerosis-Associated Usual Interstitial Pneumonia

info:eu-repo/semantics/publishedVersio

Komposisi Kimia Minyak Atsiri Kulit Kayu Akway (Drimys Piperita Hook F.)

Akway (Drimys piperita Hook f.) adalah tumbuhan berkayu dan berdaun hijau aromatik yang merupakan kerabat winteraceae. Tumbuhan ini digunakan oleh suku Sougb yang bermukim di desa Sururey Kecamatan Manokwari, untuk menyembuhkan malaria dan untuk meningkatkan vitalitas tubuh. Tujuan dari penelitian ini adalah untuk mengetahui rendemen minyak atsiri kulit kayu akway menggunakan metode distilasi air dan komposisi kimia minyak atsirinya menggunakan gas chromatography and mass spectroscopy (GC-MS). Hasil penelitian menunjukkan bahwa rendemen minyak atsiri kulit kayu akway adalah 0.37%. Minyak atsiri kulit kayu akway tersusun dari 41 senyawa. Senyawa-senyawa yang menyusun minyak atsiri terdiri dari terpen dan turunannya sebesar 80.49% and senyawa alifatik 4.88%

Facile synthesis of low band gap ZnO Microstructures

Abstract In this work a simple chemical route was employed to synthesize ZnO microparticles by precipitation from aqueous solution of ZnCl2 as precursor, NaOH as oxidizing and sodium dodecyl sulfate (SDS) as surfactant. Samples of ZnO microparticles were analyzed by scanning electron microscopy (SEM), FTIR spectroscopy, Raman spectroscopy, X-Ray diffraction, UV/Vis-NIR diffusereflectance,highresolutiontransmissionelectronmicroscopy(HR-TEM),andN2 adsorption-desorption.Itwasobserved from SEM analysis that ZnO microparticles with morphologies resembling six-blade impeller with diameters in the range of 500 nm to 1 m, and sheet-like (approximately 200 nm×300 nm) were obtained through this technique. X-Ray diffraction and Raman analyses confirmed the obtaining of hexagonal wurtzite ZnO crystal structure. The calculated band gap energy was 3.19 eV, which is slightly lower than the average value reported in the literature. Specific BET area of ZnO microparticles was 26.5 m2/g. Keywords: ZnO, microstructures, band gap energy, SEM, morphology. Resumen En este trabajo se empleó un a ruta química sencilla para sintetizar micropartículas de ZnO mediante precipitación en solución acuosa de ZnCl2 como precursor, NaOH como oxidante y dodecil sulfato de sodio (SDS) como tensoactivo. Las muestras de ZnO fueron analizadas mediante microscopía de barrido electrónico (SEM), espectroscopía de FTIR, espectroscopía Raman, difracción de rayos-X, reflectancia difusa de UV/Vis-NIR, microscopía de transmisión de electrones de alta resolución (HRTEM), y mediante adsorción-desorción de N2. Se observó mediante análisis de SEM que mediante esta técnica se obtienen micropartículas de ZnO con morfologías similares a impulsores de seis-aspas con diámetros entre 500 nm y 1 m, morfologías tipo-hojas(deaproximadamente200nm×300nm).Losanálisisdedifracciónderayos-XydeRamanconfirmaronlaobtención de ZnO con estructura cristalina wurtzita hexagonal. La energía de band gap calculada fue de 3.19 eV, la cual es ligeramente menor que el valor promedio reportado en la literatura. El área superficial BET de las nanopartículas de ZnO fue de 26.5 m2/g Palabras clave: ZnO, microestructuras, energía de band gap, SEM, morfología

PRODUKSI BIOETANOL DARI BUAH BEBERAPA JENIS MANGROVE DI PAPUA

Mangrove plant has played important role in Papua, both to support the health of ecosystem and the livelihood of its community. As of now, there is only limited knowledge on the utilization of mangroves in Papua. Several varieties in Papua are known to contain carbohydrate and cellulose that can be used to produce food or bioethanol. This study aimed to examine the production of bioethanol using dry grinding and wet grinding methods. The varieties of mangroves used in this research were Rhizophora mucronata Lmk., Rhizophora stylosa Griff., and Bruguiera gymnorrizha. The content of bioethanol as well as the shape and dimension of these varieties were measured in this study. The shape of the mangroves fruit was cylindrical. The mass averages of these mangroves were 180.80 g, 40.39 g and 37.62 g, respectively. The length of the mangrove fruits were 72.33 cm, 41.00 cm and 23.33 cm respectively. The result of the research showed that the best method to produce bioethanol from mangrove fruit was the dry grinding method which resulting in average bioethanol content 6% v/m. Rhizophora stylosa Griff produced the highest bioethanol content, 9.26% v/m, using the dry grinding method and 7.14% with the wet grinding method. Keywords:mangrove fruits, bioethanol, dry grinding,wet grindin