Food packaging

Berk, Zeki

doi:10.1016/b978-0-12-373660-4.00026-0

Cited by 29 publications

(36 citation statements)

References 1 publication

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“…Gloss 45° values of the films with 35 µm and 60 µm are at the same range, but the film with 100 µm presents a smaller value for Gloss 45°. Usually it is desirable to produce films with low haze and high gloss for the packaging industry when the product does not need light protection [2,30] .…”

Section: Film Characterizationmentioning

confidence: 99%

“…For communication one can understand that the package usually sports the name of the product and nutritional information, for example. But the package also shows the product to the costumer, so it is important that the film have low haze [2,3] . They are basically produced by blown and cast film processes.…”

Section: Introductionmentioning

confidence: 99%

“…Flexible packaging marketing is the major application for LLDPE. Packaging fulfills four functions: containment, protection, convenience and communication [2] . For communication one can understand that the package usually sports the name of the product and nutritional information, for example.…”

Section: Introductionmentioning

confidence: 99%

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The influence of long chain branches of LLDPE on processability and physical properties

2015

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SbstractTwo polyethylene-based on single-site metallocene catalyst (mLLDPE) were selected to characterize the effect of long chain branching (LCB) on blown film processability, optical and mechanical properties. 13C NMR and parallel plate rheology were used to identify LCB presence on LLDPEs. Blown films were produced from 100% LLDPEs using three different machine direction (MD) stretch ratios. When the same processing conditions for the two LLDPEs grades were used, better processability was observed for LLDPE with LCB. In relation to mechanical and physical properties, Elmendorf tear and optical properties were highly influenced by the presence of LCB. Tear resistance is affected by film orientation and is inversely proportional to the level of LCB in the polymer. It was observed a reduction of 50% in the MD tear strength when comparing with the polymer without LCB. However, haze decreases significantly with the presence of LCB, about 40%.

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Section: Film Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The influence of long chain branches of LLDPE on processability and physical properties

2015

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“…Prosedur yang dilakukan pada penelitian dimulai dari menimbang jahe sebanyak 0,5 kg dengan variasi ketebalan (2 mm, 4 mm, dan 6 mm), mempersiapkan data logger yang sudah diatur di laptop untuk merekam data setiap 5 menit sekali, dan kemudian diletakan pada ruang pengering, mengatur kipas pada ruang pengering pada kecepatan 1,1 m/detik [16], penelitian dilakukan pada siang hari (09.00-17.00 WIB) dan pada saat malam hari (21.00-05.00 WIB menggunakan desikan molecular sieve 13X (Na2O.Al2O3. 2,45 SiO2.6H2O) dengan variasi perbandingan jumlah bahan dan desikan (1:1; 1:2;, dan 1:3).…”

Section: Gambar 1 (A) Alat Pengering (B) Rak Pengeringunclassified

Pengaruh Ketebalan Bahan Dan Jumlah Desikan Terhadap Laju Pengeringan Jahe (Zingiber Officinale Roscoe) Pada Pengering Kombinasi Surya dan Desikan

Ridhatullah

2019

J. Teknik Kimia

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AbstrakJahe merupakan tanaman rempah yang biasa dimanfaatkan sebagai bumbu masakan atau bahan baku obat, tradisional atau industri. Jahe memiliki kandungan air yang tinggi sehingga mudah terkontaminasi mikroba dan bahan aktif (gingerol) yang mudah rusak akibat suhu tinggi. Pengeringan jahe bertujuan untuk menjaga kualitas jahe kering tetap terjaga dan bebas dari mikroba. Proses pengeringan jahe dilakukan secara berkelanjutan dengan pengering surya meggunakan kolektor plat datar pada saat siang dan dilanjutkan desikan Molecular Sieve X13 ketika malam. Pengeringan memvariasikan ketebalan jahe 2 mm, 4 mm, dan 6 mm, serta perbandingan jumlah bahan dan desikan 1:1; 1:2; dan 1:3. Untuk mendapatkan data karakteristik pengeringan, neraca elektrik digunakan menghitung massa setiap 1 jam sekali dan data logger tiap 5 menit menghitung suhu dan kelembaban pada ruang pengering. Hasil dari pengeringan jahe didapat bahwa ketebalan 6 mm membutuhkan waktu lebih dari 20 jam proses pengeringan sehingga membutuhkan pengeringan kombinasi dibandingkan ketebalan lain, dan dari hasil analisa kualitas jahe kering, parameter kadar abu sesuai standar SNI, dan perbandingan bahan dan desikan 1:1 merupakan variasi yang paling mendekati standar SNI.Kata kunci: jahe, kombinasi pengeringan surya dan desikan, ketebalan bahan, perbandingan jumlah desikan AbstractGinger is a spice plant that is usually used as a seasoning in cooking or raw material for medicine, traditional or industrial medicine. Ginger has a high-water content so its easily contaminated with microbes and has active ingredients (gingerol) which are easily damaged by high temperatures. Ginger drying is intended for maintaining the quality of dry ginger and keep ginger from microbes. The drying process has done in continuously with solar dryer using flat plate type collector during the day and at night using the Molecular Sieve 13x desiccant. Drying varies the thickness of ginger 2 mm, 4 mm, and 6 mm, and the amount ratio of desiccant: 1:1; 1:2; and 1:3. To get drying characteristics, every 1-hour mass calculated using an electric scale, and data logger every 5 minutes calculates the temperature and humidity rate (RH) in the drying chamber. The result from ginger drying is the thickness of 6 mm needed more than 20 hours of drying process so that it needed the combination of dryer compared to other thickness, and from quality analysis results of dry ginger, ash content parameters already accordance with SNI standards, and 1:1 material and desiccant ratio is the variation that most closely matches the SNI standard.Keyword: ginger, combination of solar and desiccant dryer, material thickness, desiccant amount ratio

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“…Polymeric films such as polyvinyl chloride (PVC) and polyethylene terephthalateand (PET) are commonly used in post-harvest packaging of fruit and vegetables. 1 Numerous applications of hyperspectral imaging (HSI) have been presented for quality evaluation of food and pharmaceutical products. [2][3][4] Hyperspectral imaging of food products through packaging would be useful for post-harvest quality evaluation and verification, eliminating the need to remove such products from packaging prior to testing.…”

Section: Jsimentioning

confidence: 99%

Use of spectral pre-processing methods to compensate for the presence of packaging film in visible–near infrared hyperspectral images of food products

Gowen

Downey

Esquerre

et al. 2010

J. Spectral Imaging

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The presence of polymeric packaging film in images of food products may modify spectra obtained in hyperspectral imaging (HSI) experiments, leading to undesirable image artefacts which may impede image classification. Some pre-processing of the image is typically required to reduce the presence of such artefacts. The objective of this research was to investigate the use of spectral pre-processing techniques to compensate for the presence of packaging film in hyperspectral images obtained in the visible-near infrared wavelength range (445-945 nm), with application in food quality assessment. A selection of commonly used pre-processing methods, used individually and in combination, were applied to hyperspectral images of flat homogeneous samples, imaged in the presence and absence of different packaging films (polyvinyl chloride and polyethylene terephthalate). Effects of the selected pre-treatments on variation due to the film's presence were examined in principal components score space. The results show that the combination of first derivative Savitzky-Golay followed by standard normal variate transformation was useful in reducing variations in spectral response caused by the presence of packaging film. Compared to other methods examined, this combination has the benefits of being computationally fast and not requiring a priori knowledge about the sample or film used.

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Food packaging

Cited by 29 publications

References 1 publication

The influence of long chain branches of LLDPE on processability and physical properties

The influence of long chain branches of LLDPE on processability and physical properties

Pengaruh Ketebalan Bahan Dan Jumlah Desikan Terhadap Laju Pengeringan Jahe (Zingiber Officinale Roscoe) Pada Pengering Kombinasi Surya dan Desikan

Use of spectral pre-processing methods to compensate for the presence of packaging film in visible–near infrared hyperspectral images of food products

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