Measurement of Sugar and Moisture in Fruits by Near-Infrared Spectrometers
Fruit quality assessment is revolutionized by NIR spectroscopy, a rapid and contactless method. It analyzes near-infrared light interactions with fruit tissues to quantify key components such as sugars and acids, streamlining quality control in agricultural production.
JINSP SR100N17 and SR100N25 near-infrared refrigerated spectrometers are versatile instruments with applications spanning a broad wavelength range of 0.9 to 1.7μm or 0.9 to 2.5μm, respectively. These spectrometers are equipped with integrated light filters that effectively screen out visible light and remove high-order modes. Additionally, they feature acooled 512-pixels area array InGaAs sensor, ensuring high resolution and minimal stray of light. These spectrometers are suitable for detecting near-infrared spectra through transmission, reflection, or absorption methods.
Technical Specifications:
| | Performance Indicators | SR100N17 | SR100N25 |
| Detector | Type | Refrigerated linear array InGaAs |
| Effective Pixel | 512 |
| Pixel Size | 25μm*500μm |
| Sensing Area | 12.8mm*0.5mm |
| Optical
Parameters | Wavelength Range | 900-1700nm | 900-2500nm |
| Optical Resolution | 3.1nm(@25μm) | 6.3nm(@25μm) |
| Optical Design | F/4 cross-type |
| Numerical Aperture | 0.14 |
| Focal Length | 100mm |
| Entrance Slit Width | 5μm ,10μm ,25μm ,50μm (customizable) |
| Incident Light Interface | SMA905 fiber interface, free space |
| Electrical
Parameters | Integration Time | 1ms-12s | 1ms-200ms |
| Data Output Interface | USB2.0, UART |
| ADC Bit Depth | 16-bit |
| Power Supply | DC4.9 to 5.1V(type @5V) |
| Operating Current | ＜3A |
| Operating Temperature | 10°C~40°C |
| Storage Temperature | -20°C~60°C |
| Operating Humidity | ＜90%RH (no condensation) |
| Physical
Parameters | Dimensions | 178mm*123mm*49mm |
| Weight | 1.2kg |
Measurement Principle:
The 780-2500nm NIR region captures molecular vibrations through light absorption, generating spectra with overlapping peaks from functional groups like C-H and O-H. These spectral features allow non-destructive analysis of complex agricultural matrices, revealing chemical composition and quality traits.
Measurement Method:
- Near-infrared reflection detection method: It is suitable for detecting information on the surface of fruit peels, such as color and luster, but not for internal quality detection.
- Near-infrared transmission detection method: Theoretically, it is applicable to transparent or semi-transparent samples and cannot penetrate fruits. It is less used in practical applications.
- Near-infrared diffuse reflection detection method: It is a measurement method between reflection and transmission, suitable for opaque, solid and semi-solid samples. The obtained spectral information can reflect the characteristics of the internal structure of fruits and is widely used in the detection of internal qualities of fruits (such as sugar content, acidity, etc.).
Applications:
- Quality assessment: Predict quality parameters such as firmness, sweetness, and acidity of fruits.
- Classification and identification: Distinguish and identify the types of different fruits.
- Functional fruit evaluation and screening: It can be used to evaluate and screen functional fruits rich in special components.
- Disease monitoring: It can quickly diagnose diseases such as citrus Huanglongbing and provide early warnings for disease prevention and control.
Company Profile and Exhibition:
JINSP Company Limited originates from Tsinghua University and has 17 years of experience in developing spectroscopic technology.As a leading supplier of spectroscopic technology, JINSP Technology offers over twenty spectroscopic products across various fields, including pharmaceutical and chemical industries, public security, customs, and fiber optic spectrometers. Our products are available nationwide and are exported to over 30 countries, with cumulative sales exceeding 3,000 units.
Our products mostly include:
--UV VIS NIR fiber optic spectrometers;
--Desktop/portable, online Raman analyzers for laboratory or indutrial liquid & gas analysis;
--On-site rapid detectors/identifiers based on Raman technology for drugs, liquid, food safety, explosive & hazardous materials, pharmaceutical industry etc;
FAQ
Q: This is the first time I use,is it easy to operate?
A: We will send you manual and guide vedio in English,it can teach you how to operate the spectrometer.Also our technicians will offer professional tecnical opearation meetings.
Q: Can your offer a operation traning?
A: Your technicians can come to our factory for a training. Jinsp engineers can go to your place for local support( installation , training, debugging, maintenance ).
Q: What's your website?
A: You can visit: www.jinsptech.com
Q: What about your quality assurance?
A: We have a quality inspection team. All goods will go through quality inspection before shipment. We can send you pictures for inspection.
