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Laksmi Putri Ayuningtyas
Program Studi Teknologi Pangan, Universitas Nahdlatul Ulama Purwokerto
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Engineering Environmental Science Mathematics Mechanical Engineering Physics Veterinary

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Pengaruh penambahan gula kelapa kristal terhadap pH, total asam dan kadar sukrosa yogurt buah naga merah (Hylocereus polyrhizus) Siti Rahmawati Zulaikhah; Arif Harnowo Sidhi; Laksmi Putri Ayuningtyas
Jurnal Sains Peternakan Vol 9 No 2 (2021): Jurnal Sains Peternakan
Publisher : Fakultas Peternakan, Universitas PGRI Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/jsp.v9i2.5874

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh penambahan gula kelapa Kristal terhadap pH, total asam dan kadar sukrosa yogurt buah naga merah (Hylocereus polyrhyzus). Perlakuan penambahan gula kelapa Kristal dalam pembuatan yogurt buah naga merah ini ada 4 level, yaitu 0% (T0), 5% (T1), 10% (T2,dan 15% (T3). Rancangan penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan 5 kali ulangan. Data variabel pengamatan berupa pH, total asam dan kadar sukrosa dianalisis menggunakan analisis variansi, dan apabila terjadi pengaruh yang nyata maka diuji lanjut dengan uji wilayah ganda Duncun (Duncan Multiple Range test). Hasil penelitian menunjukkan bahwa perlakuan penambahan gula kelapa kristal dari 0% sampai level 15% dalam yogurt buah naga merah tidak mempengaruhi pH dan total asam yogurt, tetapi mempengaruhi kadar sukrosa yogurt yang semakin meningkat. Kata Kunci: Yogurt Buah Naga Merah, Gula Kelapa Kristal, pH, Total Asam, kadar Sukrosa
Increased PENINGKATAN COLLABORATION SKILLS DALAM KEGIATAN PRAKTIKUM FISIKA DASAR MAHASISWA PROGRAM STUDI TEKNOLOGI PANGAN UNU PURWOKERTO Asti Dewi Nurhayati; Laksmi Putri Ayuningtyas; Hikmah Yuliasari
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 5 No 2 (2021): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v5i2.2237

Abstract

The purpose of this research was to observe the student’s collaboration of food technology department in 2019 through basic physics practicum. The research method used classroom action research which was divided into four parts, that is planning, action, observation, and reflection. This research was done into four groups and accompanied by each observer. They had to take responsibility to observe the collaboration skill of each student in the group. The results of this research showed that the collaboration skill increased in every part. Group one of the first part showed a result of 45% with moderate success criteria, it increased in the second part to 51.11% (moderate), it increased in the third part to 76.67% (high), and it increased in the fourth part to 92.78% with very high success criteria. So it happened in group two, group three, and group four. Group two of the first part showed a result of 42.22% (moderate), in the second part to 51.117% (moderate), in the third part to 71.67% (high) and in the fourth part to 90% (very high). Group three of the first part showed a result of 46% (moderate), in the second part to 52.67 (moderate), in the third part to 79.33% (high), and in the fourth part to 92.67% (very high). Group four of the first part showed a result of 39.33% (low), in the second part to 56% (moderate), in the third part to 82.67% (very high), in the fourth to 92% (very high).
Bunga Telang (Clitoria ternatea L.) Sebagai Indikator pH dalam Sistem Kemasan Pintar Fenny Aprilliani; Laksmi Putri Ayuningtyas; Hanis Adila Lestari
Agroteknika Vol 5 No 2 (2022): Desember 2022
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/agroteknika.v5i2.133

Abstract

Abstract. Bahan pangan yang disimpan mengalami perubahan kualitas diantaranya perubahan warna, bau, timbulnya lendir, serta perubahan pH. Perubahan-perubahan ini terjadi akibat aktivitas dan pertumbuhan bakteri pembusuk serta reaksi fisiologis pada bahan pangan tersebut. Label pintar yang diaplikasikan pada bahan pengemas dapat menjadi solusi untuk mengetahui perubahan parameter mutu yang terjadi selama penyimpanan. Tujuan dari penelitian ini adalah untuk mengkaji efektifitas antosianin bunga telang sebagai indikator pH pada penyimpanan daging. Bunga telang diekstraksi antosianinnya untuk membuat indikator pH, kemudian diuji aktivitas indikator pH dalam bentuk sensitivitasnya terhadap perubahan warna daging sapi segar pada rentang pH 1-12. Konsentrasi antosianin bunga telang yang didapatkan pada penelitian ini adalah 121,90±1,67 mg/L. Label pintar yang diaplikasikan sebagai indikator pH telah memberikan perbedaan perubahan warna pada berbagai rentang pH dari pH 1-12. Ekstrak antosianin bunga telang berubah dari warna pink menjadi pink ke unguan pada range pH 1-3, perubahan warna ekstrak antosianin ungu menjadi biru untuk range pH 4-10, biru gelap pada pH 11 dan kuning gelap untuk pH 12. Label indikator yang diproduksi mampu digunakan untuk mengetahui perubahan tingkat kesegaran daging berdasarkan perubahan pH selama penyimpanan dilihat dari parameter Lightness (L*), Chroma (C*), dan Hue (H) terhadap perubahan pH daging sapi segar.
CRYSTALLINE AND DIGESTIVE CHARACTERISTICS OF HEAT MOISTURE TREATED AND ANNEALED LESSER YAM (Dioscorea esculenta) STARCH Laksmi Putri Ayuningtyas; Ashri Mukti Benita; Desy Triastuti
Jurnal Pangan dan Agroindustri Vol. 10 No. 1: January 2022
Publisher : Department of Food Science and Biotechnology, Faculty of Agriculture Technology, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpa.2022.010.01.1

Abstract

Hydrothermal modification is a physically safe modification applied in a food product to enhance its functional properties and to extend the starch application in the food industry. Heat Moisture Treatment (HMT) and Annealing (ANN) affect the starch’s functional properties in its crystalline and digestive characteristics. Native starch is modified by HMT with 25% moisture content and 4 hours heating time, by ANN with starch and water ratio of 1:3 (w/w), and 10 hours at 50°C. Modified lesser yam starch by HMT and ANN have different crystalline and digestive characteristics from its native, although the modification do not change its granule morphology. The diffraction pattern of HMT starch is changed from A-type to A+B-type, but not on the ANN starch. Starch content and digestive value decreased, while amylose and resistant starch content increased compared to native starch. Hydrothermally modified starch could be considered as a raw material in thermally stable functional foods.
Karakterisasi Pati Kimpul (Xanthosoma sagittifolium) dengan Modifikasi Heat Moisture Treatment Laksmi Putri Ayuningtyas; Kavadya Syska; Hikmah Yuliasari
Scientific Timeline Vol. 1 No. 1 (2021)
Publisher : UNU Purwokerto

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Abstract

Heat moisture treatment (HMT) refers to a physical method for altering physicochemical and molecular properties of root and tuber starches. Principally, the starch's moisture content is adjusted to 10-35% and then exposed to heat (90-120°C) above the glass transition and gelatinization temperature for 15 minutes until 16 hours. Low moisture content did not allow starch gelatinization. In this work, cocoyam starch was modified using HM, with the moisture content of 25% and heating temperature of 105°C for 4 hours. Results show that HMT did not disrupt the cocoyam starch granule structure, while it increased swelling power and water binding capacity and decreased oil binding capacity compared to native starch.
Efek Penambahan Pati Talas Belitung Terhadap Karakteristik Fisik dan Sensoris Nugget Ayam dengan Substitusi Jamur Tiram Hikmah Yuliasari; Kavadya Syska; Laksmi Putri Ayuningtyas
Scientific Timeline Vol. 1 No. 1 (2021)
Publisher : UNU Purwokerto

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Abstract

This work aimed to evaluate the effect of taro (Xanthosoma sagittifolium) starch addition as filler on the physical and sensory properties of oyster mushroom substituted chicken nugget. This research used a complete randomized design with two factors: 1) chicken and oyster mushroom proportion and 2) taro starch percentage. Additional taro starch percentages of 10% (K1), 20% (K2), and 30% (K3) significantly affect the hardness of chicken nuggets. On the other hand, the increasing proportion of oyster mushroom to chicken affect vice versa. The chicken and oyster mushroom proportion of 25:75 (F4) on the additional percentage of 20% (K2) and 30% (K3) showed a higher mean value than 10%taro starch addition (K1). The highest hedonic score was chicken nugget with 75% (F4) and 100% (F5) oyster mushroom addition, ranged from 3.80 (quite like) and 4.20 (like). In contrast, taro starch addition as filler had no significant effect on the nugget's hedonic score.
Co-Authors Arif Harnowo Sidhi Ashri Mukti Benita Desy Triastuti Fenny Aprilliani Hanis Adila Lestari Hikmah Yuliasari Kavadya Syska Nurhayati, Asti Dewi Zulaikhah, Siti Rahmawati