Madu merupakan cairan alami yang dihasilkan oleh lebah madu,berasal dari nektar bunga atau bagian lain dari tumbuhan. Madu dinyatakan memiliki kualitas baik apabila memenuhi standar kualitas madu. Kualitas madu dapat ditentukan berdasarkan kadar air, gula dan keasaman. Penelitian ini bertujuan untuk mengetahui kualitas madu lokal di Kabupaten Magelang. Pengambilan sampel secara purposive sampling dari lima wilayah Kabupaten Magelang, yaitu Desa Kaliurang, Ringinanom, Kaliabu, Munggangsari, danKebonrejo. Penentuan kadar air dan gula total dengan metode refraktometri, sedangkan keasaman dengan metode titrasi asam-basa. Analisis kadar air, gula total, keasaman dibandingkan dengan standar kualitas madu. Hasil uji kualitas madu menunjukkan nilai kadar air berkisar antara 20,72-31,72%, gula total 66,33-77,89˚Brix, keasaman 37,12-271,35 ml NaOH/kg di mana kualitas madu Desa Kaliurang dan Desa Munggangsari telah memenuhi standar SNI 01-3545-2013 dan U.S. Patent Application Publication.
Rhizophora mucronata is a type of mangrove that plays an important role in coastal life. Reproductivity of R. mucronata is influenced by environmental factors. This study aims to examine the effect of environmental conditions on pollen quality in terms of viability and germination. The sampling method used was purposive sampling from three stations and two different flowering phases (pre-anthesis and anthesis). Pollen quality was carried out by staining test using acetocarmine dye and germination test using Brewbaker and Kwack (BK) media. The data were then analyzed using analysis of variance. Based on differences in sampling stations, the highest pollen viability was recorded at Station II (91.25%), and the highest was in the preanthesis flowering phase (92.88%). The highest pollen germination was recorded at Station III (95.36%), and the lowest was in the pre-anthesis phase from Station I (87.41%). The results showed that the three different location two different flowering phase were still suitable for the growth of R. mucronata mangroves.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.