การนำมาประยุกต์ใช้งาน

Solvent Extractables from Rubber (E-916)

Extractables are chemical compounds that migrate from rubber or plastic material under forced conditions. Rubber samples were extracted using Pressurized Solvent Extraction; in comparison to the Soxhlet extraction required by ISO 1407 the extraction time can be significantly reduced. The determined contents of the samples were in the expected range.

Solid Supported Evaporation

Unlock extraction efficiency with a Rotavapor

Your Evaporation Guide – Temperature difference

Achieve higher distillation efficiency when using a rotary evaporator by reading on the impact of temperature differences.

There is a direct relationship between the heating bath temperature and the evaporation rate. The more energy applied to the evaporation side, and at the same time removed from the condensation side, the more efficient is the distillation. Furthermore, sufficient cooling as well as an appropriate and stable under pressure are crucial for efficient distillation. On the other hand, the consumption of electrical energy is comparatively greater at higher temperatures. Moreover, some samples are thermo-sensitive, thus exacerbating the circumstances. Therefore the respective parameters have to be fine-tuned to the individual sample and application. The “Delta 20 Rule” is a guideline to compromise between high evaporation output and energy usage. For instance, using the 10/30/50 parameters is appropriate for the evaporation process in order to bring in and to carry off the accumulated energy efficiently.

3-MCPD and glycidol in infant formula

Esters of 2- and 3-MCPD (monochloropropanediol) can be found in food products containing vegetable oils due to their formation during the refining process. It is important to note that 3-MCPD has been classified as potentially carcinogenic to humans, while glycidol is considered carcinogenic and genotoxic. The European Food Safety Authority (EFSA) has established a tolerable daily intake (TDI) of 0.8 μg/kg body weight for 3-MCPD. Although no specific TDI value is available for glycidol and glycidyl esters, their presence should be minimized according to the ALARA principle (As Low As Reasonably Achievable). Among all food products, infant formula is of utmost concern due to its consumption by non-breastfed infants with relatively low body weight. To address this issue, a reliable and rapid method for the determination of 3-MCPD and glycidol in infant formula is essential. The presented procedure utilizes pressurized solvent extraction with the SpeedExtractor E-916, a Buchi Product, for the efficient extraction of infant formula samples. This method ensures fast and reliable analysis of 3-MCPD and glycidol levels in infant formula.

A comprehensive guide to setting optimal methods for parallel evaporation by SyncorePlus

This guide will help you define methods suitable for parallel evaporation using SyncorePlus. Optimal parameters can be obtained from the solvent’s physical properties, which allows for a fast evaporation process with high solvent recovery.  

Applied Industrial Rotavapor solutions for cannabis products

With the chains on the highly regulated cannabis market loosening worldwide, the need for easy to use devices offering large scale distillation process possibilities has increased. Multiple start-up companies have been formed in the last few years to take part in this emerging market.The demand for processed cannabinoids range from recreational products like edibles, i.e. gummy bears, candy and chocolate bars, to medial goods such as tablets, sprays and tinctures. With the increasing need for cannabis products, industrial production is even more necessary.The market requires flexible and easy to operate evaporators that can gradually be invested into. When applying the industrial Rotavapor® there is no need of a large workforce or a large acquisition budget in contrast large scale industrial plants. Profound process know-how for the optimization and application in this promising field are available at BUCHI due to the far-reaching experience from the very early stages.

AutoDest and AutoDry function with SyncorePlus

AutoDest and AutoDry are two possibilities making evaporations on the SyncorePlus even more convenient without a need to define a method.

This Technical Note revealed that the AutoDest and AutoDry option have an excellence performance with a SyncorePlus system. The automated evaporation of different solvents were investigated on SyncorePlus Polyvap and SyncorePlus Analyst by use of the AutoDest sensor in combination with the AutoDry valve without a preset method.

Brominated Flame Retardants in Marine Mammals

In recent years, the most widely used brominated flame retardants (BFRs), have been substituted with other, non-PBDE, BFRs. In this short note, a method for the analysis of aBFRs in biota samples is described. The method utilises pressurized solvent extraction with SpeedExtractor E-916 and concentration using a Syncore®, followed by a clean-up and analytics by GC-MS/MS. The recoveries of the aBFR in spiked samples were mostly between 70-120%. The monitored concentrations in marine mammals are generally low.

PCB determination in sediment

Polychlorinated biphenyls (PCBs) are a class of organic compounds based on biphenyl substituted with 1-10 chlorine atoms. They are toxic, persistent and bioaccumulate in terrestrial and aquatic biosystems and are ubiquitous in the environment. This Application Note describes the extraction and determination of PCBs in a dried sediment SETOC sample according to EPA 3541. The sample was extracted with the UniversalExtractor E-800 in the Soxhlet warm mode. 

Polycyclic aromatic hydrocarbons in sludge samples

Polycyclic aromatic hydrocarbons (PAHs) are organic compounds of hydrogen and carbon, composed of numerous aromatic rings. There are more than 150 such compounds containing two or more benzene rings, such as naphthalene (NAP) and anthracene (ANT). PAHs are nonpolar and lipophilic and primarily found in natural sources such as creosote. They are also produced through the incomplete combustion of organic matter. Nowadays, the main sources of PAH pollution, are caused by human activity and vary across the globe. Most PAHs enter the environment via the atmosphere through processes of combustion and pyrolysis. PAHs have been detected in a variety of foods due to the deposition of airborne PAHs, as well as in fish from contaminated waters. PAHs are also formed during certain methods of food preparation such as charbroiling, grilling, roasting and frying. The respiratory tract and the skin are the two organs most affected by PAHs in the human body. Common symptoms include solar dermatitis, acne dermatitis and epifolliculitis. Many countries and regions have regulations to prohibit and detect the compounds of PAHs.In 1982, the American Environmental Protection Agency (EPA) introduced 16 representative PAHs as priority compounds for the monitoring of pollutants5. In 2016, the Ministry of Ecology and Environment of the People’s Republic of China published a new series of decrees and regulations regarding PAHs in environmental areas such as soil, sediment, sludge and air. The regulations clearly list the detection methods and value limits for PAH compounds in different applications. In the regulations HJ 783-2016 and HJ 805-2016, they recommend the extraction of a solid sample using the Pressurized Fluid Extraction method (PFE, also known as Pressurized Solvent Extraction PSE) of lyophilized samples prior to analysis by GC-MS.

Parallel evaporation after extraction of liquid dairy samples following the Mojonnier method (ISO 1211:2010) – gravimetric fat determination

The fat in liquid dairy samples is usually extracted with an organic solvent that is then evaporated to complete dryness prior to gravimetric analysis. In this short note, initial conditions and evaporation settings for the parallel evporation of milk fat dissolved in diethyl ether / light petroleum are presented. These settings have been optimized for fast and accurate results with simultaneously high solvent recoveries.

Per and polyfluoroalkyl substances (PFAS) in soil

An easy and reliable method for the determination of the Per- and polyfluoroalkyl substances (PFAS) in soil samples is introduced. A (fortified) soil sample is extracted and concentrated with the SyncorePlus Polyvap. After solid phase extraction (SPE) and clean-up of the concentrate, it is analyzed using LC-MS/MS. The results correspond well to the expected concentration in the fortified samples.

การปกป้องน้ำมันออกฤทธิ์ทางชีวภาพโดยใช้การห่อหุ้ม

การห่อหุ้มน้ำมันออกฤทธิ์ทางชีวภาพในระบบที่สะดวกและเหมาะสมถือเป็นสิ่งที่น่าสนใจ ซึ่งแสดงให้เห็นถึงแนวทางในการปรับการปลดปล่อยน้ำมันที่เป็นไปได้และมีประสิทธิภาพ เพิ่มความเสถียรทางกายภาพ ปกป้องจากปฏิกิริยาออกซิเดชัน เพิ่มฤทธิ์ทางชีวภาพ ลดความเป็นพิษ ปิดบังรสชาติที่ไม่พึงประสงค์ และปรับปรุงการปฏิบัติตามข้อกำหนดและความสะดวกสบายของผู้ป่วย ในการศึกษานี้ น้ำมันสองชนิดที่แสดงถึงปริมาณกรดไลโนเลอิกสูง (กัญชง) และกรดลิโนเลนิกสูง (แฟลกซ์) ได้รับการคัดเลือกตามลำดับสำหรับการศึกษานี้ เนื่องจากเป็นน้ำมันพรีเมียมที่ปลูกในท้องถิ่น พร้อมทั้งยังมีกรดลิโนเลอิกสูงชนิดใหม่ที่ประกอบอยู่ในน้ำมันสกัดจากเมล็ดเจีย วัตถุประสงค์ของงานนี้คือการสกัดน้ำมันออกจากเมล็ดโดยใช้วิธีการสกัดแบบ Soxhlet แบบคลาสสิก แล้วจึงห่อหุ้มเมล็ดเพื่อไม่ให้เกิดปฏิกิริยาออกซิเดชัน ผงแห้งผลิตโดยการทำแห้งแบบพ่นฝอยโดยใช้ Mini Spray Dryer B-290 (เครื่องทำแห้งแบบพ่นฝอยระดับห้องแล็บ) และอนุภาคเปียกด้วยเทคโนโลยีการอัดขึ้นรูปหลายชั้นพร้อมกันโดยใช้ Encapsulator B-395 Pro (เครื่องผลิตเม็ดบีดและแคปซูล)

คู่มือการระเหยแบบหลายตัวอย่างพร้อมกันทางสิ่งแวดล้อม

คู่มือนี้อธิบายถึงแง่มุมของการทำให้สารตัวอย่างหลายตัวเข้มข้นพร้อมกันไปเป็นปริมาตรตกค้างที่กำหนดไว้ล่วงหน้าของตัวทำละลายซึ่งเป็นไปตามวิธีการของ US EPA ด้วย Syncore® Analyst (เครื่องระเหยสารแบบหลายตัวอย่างพร้อมกัน)

Your Evaporation Guide – Immersion angle

Achieve higher distillation efficiency when using a rotary evaporator by reading on the impact of immersion angle.

The evaporation rate of a rotary evaporator depends to a large extend on the immersion angle of the evaporating flask. The flatter the immersion angle, the higher the evaporation rate. This is, among other reasons, due to the fact that a flat immersion angle increases turbulence inside the evaporating flask, hence accelerating the evaporation. However, with a flatter immersion angle the evaporating flask cannot be as deeply immersed in the heating bath medium compared with a steep immersion angle. This can be an issue especially working with smaller evaporating flasks. Generally speaking, a 40 degrees immersion angle leads to a maximum efficiency rate without restriction in handling or risking losing parts of the sample due to over spilling and bumping into the receiving flask.

โปสเตอร์ – อย่าปล่อยให้เวลาระเหยทิ้ง!

ค้นพบเคล็ดลับเพื่อเพิ่มประสิทธิภาพการระเหยสาร

ดาวน์โหลดโปสเตอร์ฟรี – "อย่าปล่อยให้เวลาระเหยทิ้งอย่างสูญเปล่า!"

SyncorePlus Application Guide

This application guide describes important aspects of the evaporation of solvents and the concentration of a sample to a predefined volume using the SyncorePlus. Guidelines for the evaporation of your specific solvent and solvent mixtures are presented. They will help you to streamline your own process with sample applications, checklists, hints, rules, tables, and tests.

หนังสือคู่มือสำหรับนักวิทยาศาสตร์กัญชา

ใช้จุลสารเกี่ยวกับวิทยาศาสตร์กัญชาเพื่อเรียนรู้เกี่ยวกับการเก็บเกี่ยวและการสกัดแคนนาบินอยด์ (THC, CBD) และเทอร์ปีนอยส์ การทำให้สารออกฤทธิ์เข้มข้น การรีไซเคิลตัวทำละลาย การทำให้สารแคนนาบินอยด์บริสุทธิ์ และการขจัดสารกำจัดศัตรูพืช

Productivity Handbook for Industrial Evaporation

ขอรับ “Productivity Handbook for Industrial Evaporation” จากเราได้ฟรี

โดยคุณสามารถนำความรู้และเทคนิคการทำงานของ BUCHI ที่มีระบุไว้ในคู่มือดังกล่าวไปประยุกต์ใช้ในการปรับแต่งและใช้ Rotavapor® ให้เกิดประโยชน์สูงสุดได้ตามความต้องการ