Jiangnan University

Canxin Cai

Zhengyu Jin

Yaoqi Tian

Jinling Zhan

Rongrong Ma

Long Chen

Xueming Xu

Jinpeng Wang

Na Yang

Zhengjun Xie

Benxi Wei

Xiuting Hu

Bing Hu

Lizhong Qiu

Yunyun Wang

The disclosure discloses a preparation method of rice noodles with low glycemic index, and belongs to the technical filed of food processing. According to the disclosure, by adding debranching enzymes and an emulsifying agent into rice starch, resistant starch is prepared and obtained through one-step extrusion, and then, other food raw materials are compounded to form the low glycemic index rice noodles through secondary extrusion. By using the characteristic that V-type crystals are formed by complexing the emulsifying agent and amylose, the disclosure adds the debranching enzymes and the emulsifying agent into a rice starch raw material for extrusion processing. The debranching enzymes added in a first-step extrusion processing process perform limited hydrolysis on starch to reduce starch branching and improve a content of the amylose. At the same time, the emulsifying agent and the highly straight-chain rice starch are complexed to generate a VI-type starch-lipid complex, and a complexing rate is obviously improved. Then, second-step extrusion processing is performed to realize transformation of the starch-lipid complex from VI-type crystals to VII-type crystals and extrusion forming. Thermal stability of the resistant starch is improved. Therefore, the low glycemic index rice noodles are prepared and obtained.

Preparation method of rice noodle with low glycemic index

The present disclosure discloses a preparation method of low-glycemic index slowly digestible starch-based reconstituted instant rice, and belongs to the technical field of food processing. The preparation method is based on high-temperature fluidization technology to carry out non-crystallization treatment on a solid phase broken rice raw material in a short period of time, and then the material is subjected to a one-step reactive extrusion technology combining enzymatic hydrolysis and esterification treatment to prepare the reconstituted instant rice with high content of slowly digestible starch and low glycemic index. The reconstituted instant rice prepared by the one-step molding extrusion technology is suitable for type II diabetes patients to eat, and at the same time increases the added value of agricultural and sideline products, reduces production cost, and improves production efficiency.

Preparation of recombinant rice with low glycemic index whose raw material is slowly digested starch

The present disclosure discloses a production method of normal-temperature instant cooked rice and belongs to the technical field of food processing. The method of the present disclosure comprises the main steps of rice washing and soaking, flavor blending, sub-packaging, cooking, sterile vacuum sealing, cooling and crystallization and normal-temperature storage, wherein an aqueous solution containing flavor substances is adopted to perform flavor blending, and a fast cooling mode is adopted to perform cooling and crystallization. The normal-temperature instant cooked rice obtained through the production method provided in the present disclosure can keep the original flavor after being stored for 90 days.

Production method of normal-temperature instant cooked rice

The present disclosure discloses a fluorescent starch nanocrystal and a preparation method and application thereof. Mainly based on the character that starch nanocrystal has an active hydroxyl group on the surface, the present disclosure introduces fluorescein isothiocyanate into the surface of the starch nanocrystal in the form of stable covalent bonds through a two-step chemical modification method: silane coupling and electrophilic addition of fluorescein, so as to prepare the starch nanocrystal with fluorescent properties. The preparation process of the present disclosure is simple and easy to operate, uses cheap and readily available raw materials, involves low cost, and allows the non-fluorescent starch nanocrystal to produce significant fluorescent properties without affecting the properties of the starch nanocrystal itself, thereby expanding the application of starch. Moreover, the fluorescent starch nanocrystal thus obtained has significant fluorescent properties, good biocompatibility and biodegradability, has application prospects in the fields of biosensor preparation, bioimaging marking and fluorescent analysis and detection, and can be further prepared into a novel nano-fluorescent probe with organic nano-particles as the matrix.

Fluorescent starch nanocrystal and preparation method and application thereof

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Wuxi, China

Canxin Cai