Anna Sulistyaningrum
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Types and concentration affect of natural preservatives on the quality of palm sugar Naufalin, Rifda Naufalin; Yanto, Tri; Sulistyaningrum, Anna
Jurnal Teknologi Pertanian Vol 14, No 3 (2013)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (353.792 KB)

Abstract

Coconut sap easily damaged, so the need for the preservation process. Farmers usually use (laru) was added a solution of lime with mangosteenrind and jackfruit wood chips to conserve juice. But the availability of a preservative is limited so that not a few farmers who use synthetic preservatives, sodium metabisulfite. Some natural preservatives that can be used as an alternative to extend the shelf life of coconut sap are betel leaves, clove leaf, guava leaves, wooden cup, and tea leaves. These materials have bioactive components that can act as antimicrobia.This research aims to 1) determine the effect of the type of natural preservatives to maintain freshness of coconut sap and quality of coconut sugar, 2) determine the effect of concentration of natural preservatives to maintain freshness of coconut sap and quality of coconut sugar, 3) determine the effect of the old store on the quality of coconut sap , 4) determine the effect of combined treatment of natural preservative type and concentration of preservatives on the quality of the coconut sugar.The research consisted of two phases. The results of phase 1 showed that the coconut sap is added preservative clove leaves (M4), guava leaves (M5) and mangosteenrind (M1) with concentration of 4.5% (K1) gave pH value, levels of sucrose and the highest sensory when compared with other preservatives. The results of phase 2 showed that coconut sugar is added to the preservative mangosteen rind, clove leaf, and guava leaves not significant difference to the chemical variables (water content, ash content, reducing sugar content, and total sugar content), but gave significant influence to organoleptic variables (color, aroma, flavor, texture, and preferences)..
Alteration of coconut sap quality due to the addition of natural preservatives Anna Sulistyaningrum; Tri Yanto; Rifda Naufalin
Jurnal Penelitian Pascapanen Pertanian Vol 12, No 3 (2015): Jurnal Penelitian Pascapanen Pertanian
Publisher : Balai Besar Penelitian dan Pengembangan Pascapanen Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jpasca.v12n3.2015.137-146

Abstract

Coconut sap is easily fermented during storage, so it is necessary to add preservative. Farmers usually use a solution of lime with mangosteen rind to preserve the sap. The availability of these preservatives are limited, so many farmers used synthetic preservatives like sodium metabisulfite. Some natural preservatives that can be used as an alternative to extend the shelf life of coconut sap were betel leaves, clove leaves, guava leaves, secang wood, and tea leaves. These materials have bioactive components that possess antimicrobial activity.This research was aimed to 1) determine the effect of types and concentration of natural preservatives to preserve freshness of coconut sap and brown sugar qualities, 2) determine the effect of the storage time on the quality of coconut sap. The research consisted of two stages and used experimental method with Randomized Block Design. The treatment of first stage included the type of natural preservative (M), consentration of preservative (K), and storage duration (L), while the second stage consisted of the best three natural preservatives from first stage (S) and concentration of preservatives (R). The results of this research showed that the coconut sap that was added with clove leaves (M4) with concentration of 4.5% (K1) gave highest pH value, levels of sucrose, sensory value, and inhibition of both the storage of 4 and 8 hours, followed by guava leaves (M5) and mangosteen rind (M1). Brown sugar is added three types of preservatives showed that no difference on water content, ash content, reduction sugar and total sugar content. These parameters meet SNI standard, except ash content only mangosteen rind and clove leaf that meets SNI standard. PERUBAHAN KUALITAS NIRA KELAPA AKIBAT PENAMBAHAN PENGAWET ALAMINira kelapa mudah terfermentasi selama penyimpanan, oleh karena itu diperlukan proses pengawetan. Petani biasanya menggunakan larutan kapur dengan kulit manggis untuk mengawetkan nira. Ketersediaan dari pengawet tersebut terbatas, sehingga banyak petani yang menggunakan bahan pengawet sintetis seperti natrium metabisulfit. Beberapa pengawet alami yang dapat dijadikan sebagai alternatif untuk memperpanjang umur simpan nira antara lain daun sirih, daun cengkeh, daun jambu biji, kayu secang, dan daun teh. Bahan-bahan tersebut memiliki komponen bioaktif yang mempunyai aktivitas antimikroba. Penelitian ini bertujuan untuk 1) mengetahui pengaruh jenis dan konsentrasi bahan pengawet alami dalam mempertahankan kesegaran nira dan kualitas gula merah, 2) mengetahui pengaruh lama penyimpanan terhadap kualitas nira kelapa. Penelitian ini terdiri dari dua tahap dan dilakukan dengan menggunakan metode eksperimen Rancangan Acak Kelompok (RAK). Perlakuan pada tahap pertama meliputi jenis pengawet alami (M), konsentrasi pengawet (K) dan lama simpan (L), sedangkan pada tahap kedua meliputi tiga jenis pengawet alami terbaik dari tahap pertama (S) dan konsentrasi pengawet (R). Hasil penelitian ini menunjukkan bahwa nira yang ditambah pengawet daun cengkeh (M4) dengan konsentrasi 4,5% (K1) memberikan nilai pH, kadar sukrosa, nilai sensori dan mempunyai daya hambat tertinggi baik pada penyimpanan 4 dan 8 jam, diikuti oleh pengawet daun jambu biji (M5) dan kulit manggis (M1). Gula merah yang ditambahkan dengan ketiga jenis pengawet terbaik tidak menunjukkan perbedaan terhadap kadar air, kadar abu, kadar gula reduksi dan kadar gula total. Ketiga parameter memenuhi standar SNI, kecuali kadar abu hanya pengawet kulit manggis dan daun cengkeh yang memenuhi standar SNI.
Decreasing of Cayenne Pepper Quality During Storage in Room Temperature Anna Sulistyaningrum; Darudryo Darudryo
JURNAL AGRONIDA Vol. 4 No. 2 (2018)
Publisher : Universitas Djuanda Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.82 KB) | DOI: 10.30997/jag.v4i2.1566

Abstract

Cayenne pepper storage at room temperature will cause physical, mechanical,chemical or microbiological damage in short time. In room terperature conditions cayennepepper can only survive for 2-3 days and finally will be decay. The use of packaging canincrease the small chilli storeability, because packaging can reduce the level of exposure toenvironmental changes. This research aims to study the quality changes of cayenne pepperduring storage on room temperature. The results showed that losses of cayenne pepper weightincreased with increasing duration of storage. Cayenne pepper storaged for 8 days causedweight loss of 24.25%. The use of perforated plastic packaging can reduce the weight loss by16.82%, much lower than the control of 31.67%. The pH of chili during the 8-days decreasedwith value of 6.55 while the control was 6.7. The pH experienced decreased of 2.23% fromthe control (without packaged). While the number of colored cayenne pepper increasedduring storage from 40% in control treatment and 60% in the packaging. The use ofperforated plastic packaging provides a higher organoleptic value with a total value of 18which consists of 4.27 color parameters (close to green), texture 4.5 (very close to very hard),4.6 appearance (near very smooth) and freshness 4.63 (approached very fresh).Keywords: chili, storage duration, weight loss, pH, packing