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UJI KUALITATIF ALKALOID DAN TANNIN EKSTRAK KULIT BAWANG DAN DAUN KETAPANG DENGAN METODE EKSTRAKSI ULTRASONIK Risa Nofitarini; Fera Shonia Novita; Fitri Nur Hidayah
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2019): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 10 2019
Publisher : Prosiding SNST Fakultas Teknik

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Abstract

Kulit bawang dan daun ketapang berpotensi untuk sebagai pengendali hama karena mengandung alkaloid dan tannin yang dapat menyebabkan efek keracunan pada hama. Penelitian ini bertujuan untuk mengekstrak kulit bawang dan daun ketapang secara bersamaan menggunakan bantuan gelombang ultrasonik. Waktu ekstraksi divariasikan untuk mengetahui keberadaan alkaloid dan tannin secara kualitatif dan kuantitatif. Hasil penetapan kadar tannin secara spektrofotometer Uv-Vis didapatkan panjang gelombang maksimum 743 nm dengan kurva kalibrasi  y= 0,0494x + 0,0668 dan harga koefisien korelasi (r) 0,999. Hasil penelitian menunjukkan kadar tannin pada waktu 15 menit (1,06883 %), 30 menit (1,1498 %), 45 menit (1,12955 %), 60 menit (1,13968 %) dan 75 menit (1,08907). Hasil penelitian menunjukkan bahwa ekstrak kulit bawang dan daun ketapang mengandung senyawa fitokimia yaitu alkaloid dan tannin yang potensial untuk dijadikan sebagai pengendali hama pertanian.Kata kunci: alkaloid, biopestisida, kualitatif, tannin, ultrasonik
PENGARUH CITRA MEREK, HARGA, DAN KUALITAS PRODUK TERHADAP KEPUTUSAN PEMBELIAN: (Studi Kasus Pada Mahasiswa Manajemen Universitas PGRI Semarang Angkatan 2021) Slamet Wahyu Aji; Fitri Nur Hidayah; Rauly Sijabat
Jurnal Ekonomi dan Bisnis Vol. 2 No. 7 (2024): Juli
Publisher : ADISAM PUBLISHER

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Abstract

Many Indonesians themselves tend to follow the world of fashion and accessories. The development of technology and information in Indonesia is increasing, making the development of existing trends. Jims Honey is a local brand operating in the fashion sector. Even though Jims Honey is a local brand, it is still able to compete with other brands. The aim of this research is to determine the influence of brand image, price and product quality on purchasing decisions. The method used is a quantitative approach, while determining the sample uses a non-probability sample. The results of this analysis are not in line with previous research according to Marissa Grace Haque (2020) entitled The Influence of Product Quality and Price on Purchasing Decisions at PT Berlian Multitama in Jakarta, the result of which is that Price (X2) influences consumers to purchase at PT Multitama in Jakarta. Jakarta..The results of hypothesis testing, the value of t calculated > t table is 5.613 > 2.003, which means H2 is accepted..The results of this analysis mean that rising or falling prices do not influence consumers' decisions to buy Jims Honey products..So the better the brand image and product quality, the better Purchasing decisions to buy products from Jims Honey are increasing